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The historical U.S. survey foot is a different definition; an unqualified ambiguous foot must not be silently resolved.", "legacy_tools": [ { "label": "Feet to metres", "href": "/convert/length/feet-to-meter", "role": "scalar" } ], "usage_status": "current", "family_id": "length.m", "systems": [ "international_yard_pound" ], "content_digest": "8fc239ef0e803ed419d7be718d0bbf5f40f318a9200af6fd0e4a7e8b6ea53031", "dependency_digest": "d10f28e4d88bdd9e5a7d7af17b81de69fa8bbd91d41ed8cdef502e20ee0b7947", "dependency_ids": [ "cx:ft_i", "cx:m" ], "quantity_kinds": [ "length" ], "kind_label": "Length", "dimension": [ 1, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 ft = 0.3048 m." ], "normalized_transform": { "reference_unit": "cx:m", "scale": { "numerator": "381", "denominator": "1250" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/international-foot", "verification": "not_assessed", "sources": [ { "id": "source:nist-foot", "publisher": "NIST", "title": "U.S. Survey Foot: Revised Unit Conversion Factors", "url": "https://www.nist.gov/pml/us-surveyfoot/revised-unit-conversion-factors", "edition": "Web table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "References factual unit definitions; 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no media copied.", "locator": "Appendix B.8, I: inch to metre (exact factor)" } ] }, { "unit_id": "cx:kg", "slug": "kilogram", "name": "Kilogram", "symbol": "kg", "code": "kg", "aliases": [ "kilograms" ], "quantity_kind": "mass", "owner_pack": "core.metrology", "revision": "1.1.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:kg", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Section 2.3.1, SI base units" } ], "scope": "Definition metadata only; use an existing converter where linked.", "legacy_tools": [ { "label": "Kilograms to grams", "href": "/convert/weight/kg-to-gram", "role": "scalar" } ], "usage_status": "current", "family_id": "mass.kg", "systems": [ "si_coherent" ], "content_digest": "8120796a74ef03a6cfe715b03e6f92caa13f63571ddb0d39452648d246ec4c47", "dependency_digest": "f00c69fac078951371eaa5b3ef495d5b1d7c1d1d99acf4c6789cb1e8257fea7a", "dependency_ids": [ "cx:kg" ], "quantity_kinds": [ "mass" ], "kind_label": "Mass", "dimension": [ 0, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "SI reference unit for mass." ], "normalized_transform": { "reference_unit": "cx:kg", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilogram", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; 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brochure licensed CC BY 4.0.", "locator": "Section 2.3.1, SI base units" } ] }, { "unit_id": "cx:min", "slug": "minute", "name": "Minute", "symbol": "min", "code": "min", "aliases": [ "minutes", "minute" ], "quantity_kind": "duration", "owner_pack": "core.metrology", "revision": "1.1.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:s", "scale": { "numerator": "60", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Section 4, Table 8: minute" } ], "scope": "Exactly 60 seconds of elapsed time; not an angular minute.", "legacy_tools": [], "usage_status": "current", "family_id": "duration.s", "systems": [ "si_accepted" ], "content_digest": "568f3eb909f42d4d5a00b834420d8f3c140b907cd169ccd97b4748c814455aac", "dependency_digest": "caa1b58e5b7dabe1b9f2c7bcd7b6b51f4e14a40210bafb5f30b70f54e200100b", "dependency_ids": [ "cx:min", "cx:s" ], "quantity_kinds": [ "duration" ], "kind_label": "Time interval", "dimension": [ 0, 0, 1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General" ], "definition_lines": [ "1 min = 60 s." ], "normalized_transform": { "reference_unit": "cx:s", "scale": { "numerator": "60", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/minute", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; 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Temperature differences use slope only. Linked legacy tools handle points, not intervals.", "legacy_tools": [ { "label": "Celsius to Kelvin values", "href": "/convert/temperature/celsius-to-kelvin", "role": "point" } ], "usage_status": "current", "family_id": "temperature.k", "systems": [ "si_coherent" ], "content_digest": "e0ca2392c6e92876bcaa0987687b98ebc77424036b1518cff8e594f548da2151", "dependency_digest": "7dfd4abf7d5de79b4d27cb0a10c093102a1acdee14999b895848ed1f6ea2e040", "dependency_ids": [ "cx:K", "cx:degC" ], "quantity_kinds": [ "temperature" ], "kind_label": "Temperature", "dimension": [ 0, 0, 0, 0, 1, 0, 0 ], "roles": [ "point", "interval" ], "domains": [ "Thermal", "General", "Chemistry" ], "definition_lines": [ "Temperature values: value in K = 1 × value in °C + 273.15.", "Temperature differences: value in K = 1 × value in °C; no offset." ], "normalized_transform": { "reference_unit": "cx:K", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "5463", "denominator": "20" } }, "href": "/units/degree-celsius", "verification": "not_assessed", "sources": [ { "id": "source:nist-temperature", "publisher": "NIST", "title": "SI Units — Temperature", "url": "https://www.nist.gov/pml/owm/si-units-temperature", "edition": "Web conversion table accessed 2026-10-28", "checked_at": "2026-10-28", "reuse_note": "References the exact temperature conversion table and interval relationship; no media copied.", "locator": "Temperature Conversion (Exact), Celsius to Kelvin; interval explanation" } ] }, { "unit_id": "cx:degF", "slug": "degree-fahrenheit", "name": "Degree Fahrenheit", "symbol": "°F", "code": "degF", "aliases": [ "Fahrenheit", "fahrenheit", "degF" ], "quantity_kind": "temperature", "owner_pack": "core.metrology", "revision": "1.1.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "affine", "reference_unit": "cx:K", "scale": { "numerator": "5", "denominator": "9" }, "offset": { "numerator": "45967", "denominator": "180" } }, "source_refs": [ { "source_id": "source:nist-temperature", "locator": "Temperature Conversion (Exact), Fahrenheit to Kelvin; interval explanation" } ], "scope": "Temperature points use scale and offset. Differences use only 5/9; the linked legacy converter handles points.", "legacy_tools": [ { "label": "Fahrenheit to Celsius values", "href": "/convert/temperature/fahrenheit-to-celsius", "role": "point" } ], "usage_status": "current", "family_id": "temperature.k", "systems": [ "us_customary" ], "content_digest": "776fde6f816289d23b132287d108973f5a944db27111d97b2e294b29c237db98", "dependency_digest": "5af71eb521e69867ddb2c8ac68d4233f953842ad2d5bf379074d8d42ea230447", "dependency_ids": [ "cx:K", "cx:degF" ], "quantity_kinds": [ "temperature" ], "kind_label": "Temperature", "dimension": [ 0, 0, 0, 0, 1, 0, 0 ], "roles": [ "point", "interval" ], "domains": [ "Thermal", "General", "Chemistry" ], "definition_lines": [ "Temperature values: value in K = 5/9 × value in °F + 45967/180.", "Temperature differences: value in K = 5/9 × value in °F; no offset.", "Equivalent point formula: value in K = (value in °F + 459.67) × 5/9." ], "normalized_transform": { "reference_unit": "cx:K", "scale": { "numerator": "5", "denominator": "9" }, "offset": { "numerator": "45967", "denominator": "180" } }, "href": "/units/degree-fahrenheit", "verification": "not_assessed", "sources": [ { "id": "source:nist-temperature", "publisher": "NIST", "title": "SI Units — Temperature", "url": "https://www.nist.gov/pml/owm/si-units-temperature", "edition": "Web conversion table accessed 2026-10-28", "checked_at": "2026-10-28", "reuse_note": "References the exact temperature conversion table and interval relationship; no media copied.", "locator": "Temperature Conversion (Exact), Fahrenheit to Kelvin; interval explanation" } ] }, { "unit_id": "cx:m3", "slug": "cubic-metre", "name": "Cubic metre", "symbol": "m³", "code": "m3", "aliases": [ "cubic meter", "m^3", "m3" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.1.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:m3", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Section 2.3.4, Table 4: coherent derived unit for volume" } ], "scope": "Definition metadata only; use an existing converter where linked.", "legacy_tools": [], "expression": { "cx:m": 3 }, "usage_status": "current", "family_id": "volume.m3", "systems": [ "si_coherent" ], "applicable_quantity_kinds": [ "volume", "section_modulus" ], "content_digest": "9bd6494092ad5e0c70686dd8ec2327ef1d29d6928a30160d824d17a7dae453d2", "dependency_digest": "7bd6ac05183b1da8619a7047c3f1702a96f1c8ef4159c37f9f19cb1a699b5e89", "dependency_ids": [ "cx:m", "cx:m3" ], "quantity_kinds": [ "volume", "section_modulus" ], "kind_label": "Volume / Section modulus", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry", "Mechanical" ], "definition_lines": [ "1 m³ = (1 m)^3." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/cubic-metre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Section 2.3.4, Table 4: coherent derived unit for volume" } ] }, { "unit_id": "cx:L", "slug": "litre", "name": "Litre", "symbol": "L", "code": "L", "aliases": [ "liter", "litres", "liters", "l" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.1.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Section 4, Table 8: litre" } ], "scope": "Volume expression. Mass-to-volume conversion needs a separate density model.", "legacy_tools": [], "usage_status": "current", "family_id": "volume.m3", "systems": [ "si_accepted" ], "content_digest": "da80eafacf1d3af698402c5ce2274071106db460ef60f0fc392e2a5a21192f03", "dependency_digest": "56ac6086351ea902619194162a4c9fbdb6ab90b4ab43ccfecfb9268f2cec4c8d", "dependency_ids": [ "cx:L", "cx:m", "cx:m3" ], "quantity_kinds": [ "volume" ], "kind_label": "Volume", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry" ], "definition_lines": [ "1 L = 0.001 m³." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/litre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Section 4, Table 8: litre" } ] }, { "unit_id": "cx:mL", "slug": "millilitre", "name": "Millilitre", "symbol": "mL", "code": "mL", "aliases": [ "milliliter", "ml" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.1.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:L", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Section 3, Table 7: milli prefix; Section 4, Table 8: litre" } ], "scope": "Volume expression derived from litre using the milli prefix; no density or substance is inferred.", "legacy_tools": [], "usage_status": "current", "family_id": "volume.m3", "systems": [ "si_accepted" ], "content_digest": "f21e473ff23ea58517607ef316d3c31224b7acbab5f576744ef0ee9e58dd48ec", "dependency_digest": "d0688f5acfc53468f98dcc0117a594f08741be9214c58d86fcdd4dee2f130e84", "dependency_ids": [ "cx:L", "cx:m", "cx:m3", "cx:mL" ], "quantity_kinds": [ "volume" ], "kind_label": "Volume", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry" ], "definition_lines": [ "1 mL = 0.001 L." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/millilitre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Section 3, Table 7: milli prefix; Section 4, Table 8: litre" } ] }, { "unit_id": "cx:km", "slug": "kilometre", "name": "Kilometre", "symbol": "km", "code": "km", "aliases": [ "km", "kilometer" ], "quantity_kind": "length", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "length.m", "usage_status": "current", "content_digest": "a23be627a091124d8785799077fd3887a009df7e4eb2e4d57dc3dd3d74c1af25", "dependency_digest": "20816687ff27025c88d24f86c90146de75ffe83ca865e02e04d1f0d2ed53e531", "dependency_ids": [ "cx:km", "cx:m" ], "quantity_kinds": [ "length" ], "kind_label": "Length", "dimension": [ 1, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 km = 1000 m." ], "normalized_transform": { "reference_unit": "cx:m", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilometre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:um", "slug": "micrometre", "name": "Micrometre", "symbol": "µm", "code": "um", "aliases": [ "um", "micrometer", "μm" ], "quantity_kind": "length", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "length.m", "usage_status": "current", "content_digest": "c2b9a1d804696f52219f05d84af118badf4e05564ad086bdecec10ad04d7574c", "dependency_digest": "578cd4962be23ee98af454c083501de68ae05dbb20184b5a55e36887d30eb366", "dependency_ids": [ "cx:m", "cx:um" ], "quantity_kinds": [ "length" ], "kind_label": "Length", "dimension": [ 1, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 µm = 0.000001 m." ], "normalized_transform": { "reference_unit": "cx:m", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/micrometre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:nm", "slug": "nanometre", "name": "Nanometre", "symbol": "nm", "code": "nm", "aliases": [ "nm", "nanometer" ], "quantity_kind": "length", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "length.m", "usage_status": "current", "content_digest": "b4a4b74e35d02e421dba5a12c455f5bb925c5953f0bd3344fdf5b55a990de4db", "dependency_digest": "0d6b2f0ad74820dc2e5e080dd169aff9eb54d0c50346636f58654def4ec28b42", "dependency_ids": [ "cx:m", "cx:nm" ], "quantity_kinds": [ "length" ], "kind_label": "Length", "dimension": [ 1, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 nm = 0.000000001 m." ], "normalized_transform": { "reference_unit": "cx:m", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/nanometre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:yd_i", "slug": "international-yard", "name": "International yard", "symbol": "yd", "code": "yd_i", "aliases": [ "yard", "yards" ], "quantity_kind": "length", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m", "scale": { "numerator": "1143", "denominator": "1250" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Yard: 1 yd = 3 international feet = 0.9144 m exactly" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "international_yard_pound" ], "family_id": "length.m", "usage_status": "current", "content_digest": "34f9f9aee302f2ae09550ef043d66b401356781de5d3df8838d179796564e4de", "dependency_digest": "49bb2d086d2432a58e1aa4b4457d76b2804c82bb8217728724bbba4d15dd18e2", "dependency_ids": [ "cx:m", "cx:yd_i" ], "quantity_kinds": [ "length" ], "kind_label": "Length", "dimension": [ 1, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 yd = 0.9144 m." ], "normalized_transform": { "reference_unit": "cx:m", "scale": { "numerator": "1143", "denominator": "1250" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/international-yard", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Yard: 1 yd = 3 international feet = 0.9144 m exactly" } ] }, { "unit_id": "cx:mi_i", "slug": "international-mile", "name": "International mile", "symbol": "mi", "code": "mi_i", "aliases": [ "mile", "miles", "statute mile" ], "quantity_kind": "length", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m", "scale": { "numerator": "201168", "denominator": "125" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-foot", "locator": "International-foot table: mile = 5280 ft = 1609.344 m exactly" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "international_yard_pound" ], "family_id": "length.m", "usage_status": "current", "content_digest": "7c921f8da940a244413a0d4fa62a5eb8006d3be4ee27b9c2ec31c9d7d719ec36", "dependency_digest": "20193dd7c83b97502d93178e698fa8410c68a91809cd7b104dc1dc3abe5feac7", "dependency_ids": [ "cx:m", "cx:mi_i" ], "quantity_kinds": [ "length" ], "kind_label": "Length", "dimension": [ 1, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 mi = 1609.344 m." ], "normalized_transform": { "reference_unit": "cx:m", "scale": { "numerator": "201168", "denominator": "125" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/international-mile", "verification": "not_assessed", "sources": [ { "id": "source:nist-foot", "publisher": "NIST", "title": "U.S. Survey Foot: Revised Unit Conversion Factors", "url": "https://www.nist.gov/pml/us-surveyfoot/revised-unit-conversion-factors", "edition": "Web table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "References factual unit definitions; source text and media are not redistributed.", "locator": "International-foot table: mile = 5280 ft = 1609.344 m exactly" } ] }, { "unit_id": "cx:ft_us", "slug": "us-survey-foot", "name": "U.S. survey foot", "symbol": "ft", "code": "ft_us", "aliases": [ "foot", "feet", "survey foot" ], "quantity_kind": "length", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m", "scale": { "numerator": "1200", "denominator": "3937" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:noaa-foot", "locator": "Exact U.S. survey foot relationship 1200/3937 m" } ], "scope": "Historical U.S. survey foot. Distinct from the international foot; retain for legacy data. No existing international-foot tool is linked.", "legacy_tools": [], "systems": [ "historical_us_survey" ], "family_id": "length.m", "usage_status": "historical", "content_digest": "c9a383de25da18d74179885d35ea8c51f725748ae91cfa502c1f7e6f0df96654", "dependency_digest": "caafcd6d6739b985349a2627535478e27b50697d1744fe59820609b65af4ae54", "dependency_ids": [ "cx:ft_us", "cx:m" ], "quantity_kinds": [ "length" ], "kind_label": "Length", "dimension": [ 1, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 ft = 1200/3937 m." ], "normalized_transform": { "reference_unit": "cx:m", "scale": { "numerator": "1200", "denominator": "3937" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/us-survey-foot", "verification": "not_assessed", "sources": [ { "id": "source:noaa-foot", "publisher": "NOAA", "title": "A Tale of Two Feet", "url": "https://oceanservice.noaa.gov/geodesy/international-foot.html", "edition": "Web definition accessed 2026-10-29", "checked_at": "2026-10-29", "reuse_note": "Factual definition metadata with attribution; no source text, images or private validation assets redistributed.", "locator": "Exact U.S. survey foot relationship 1200/3937 m" } ] }, { "unit_id": "cx:mg", "slug": "milligram", "name": "Milligram", "symbol": "mg", "code": "mg", "aliases": [ "mg" ], "quantity_kind": "mass", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "mass.kg", "usage_status": "current", "content_digest": "6a6cfcddf3d0111a0c7d77aad3d36260e656acf5e879947e86d892cdfca05d42", "dependency_digest": "376489d3c283b3ddc6f206e77de25102c77ae49901be3cb8af8f6b8bbc35e7d1", "dependency_ids": [ "cx:kg", "cx:mg" ], "quantity_kinds": [ "mass" ], "kind_label": "Mass", "dimension": [ 0, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 mg = 0.000001 kg." ], "normalized_transform": { "reference_unit": "cx:kg", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/milligram", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:ug", "slug": "microgram", "name": "Microgram", "symbol": "µg", "code": "ug", "aliases": [ "ug", "μg" ], "quantity_kind": "mass", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "mass.kg", "usage_status": "current", "content_digest": "dbacec4e9a455912fa68044fbb2fc05aa27bfed09c16aca18278c6a6dbc9f21f", "dependency_digest": "e0df48cf79b2a9f2d235dd0485f1851c6462ddc8dfb3db0eec18b921489e5299", "dependency_ids": [ "cx:kg", "cx:ug" ], "quantity_kinds": [ "mass" ], "kind_label": "Mass", "dimension": [ 0, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 µg = 0.000000001 kg." ], "normalized_transform": { "reference_unit": "cx:kg", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/microgram", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:t", "slug": "tonne", "name": "Tonne", "symbol": "t", "code": "t", "aliases": [ "metric ton" ], "quantity_kind": "mass", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "mass.kg", "usage_status": "current", "content_digest": "46d5b9b259f5cba75ca09512b168544a2d8aca8d55d0be33e17e6e646dd248c3", "dependency_digest": "c04de6346bf81de497cd9882437094ca95f1bdc72d14f27a0991a328f3c431fe", "dependency_ids": [ "cx:kg", "cx:t" ], "quantity_kinds": [ "mass" ], "kind_label": "Mass", "dimension": [ 0, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 t = 1000 kg." ], "normalized_transform": { "reference_unit": "cx:kg", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/tonne", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:lb_av", "slug": "avoirdupois-pound", "name": "Avoirdupois pound", "symbol": "lb", "code": "lb_av", "aliases": [ "pound", "pounds", "lbs" ], "quantity_kind": "mass", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg", "scale": { "numerator": "45359237", "denominator": "100000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-pound", "locator": "Introduction: avoirdupois pound equals 0.45359237 kilogram" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "international_yard_pound" ], "family_id": "mass.kg", "usage_status": "current", "content_digest": "2c9d961534c50ddde4f8d83ad01ecf9835bed4db27b9c50a213722b1166188a7", "dependency_digest": "0b6f899014f1c412028e7261d3ca180eb1095bdca44767138b949e1a616ddc49", "dependency_ids": [ "cx:kg", "cx:lb_av" ], "quantity_kinds": [ "mass" ], "kind_label": "Mass", "dimension": [ 0, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 lb = 0.45359237 kg." ], "normalized_transform": { "reference_unit": "cx:kg", "scale": { "numerator": "45359237", "denominator": "100000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/avoirdupois-pound", "verification": "not_assessed", "sources": [ { "id": "source:nist-pound", "publisher": "NIST", "title": "Mass Calibrations, SP 250-31", "url": "https://www.nist.gov/system/files/documents/calibrations/sp250-31.pdf", "edition": "SP 250-31, mass unit definition", "checked_at": "2026-10-29", "reuse_note": "Factual definition metadata with attribution; no source text, images or private validation assets redistributed.", "locator": "Introduction: avoirdupois pound equals 0.45359237 kilogram" } ] }, { "unit_id": "cx:ms", "slug": "millisecond", "name": "Millisecond", "symbol": "ms", "code": "ms", "aliases": [ "millisecond" ], "quantity_kind": "duration", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:s", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 7 prefixes; Table 8: day = 24 h = 86400 s" } ], "scope": "Elapsed duration only. A calendar day across time-zone or daylight-saving transitions is a different operation.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "duration.s", "usage_status": "current", "content_digest": "94ce62909c4ef939570446655f3ab8b8eb6b3797ee836bb621b8d39757c31189", "dependency_digest": "7970a7e7be72cef9ebbc954716c0933aa5247b4cc8a288681334d493b744adfc", "dependency_ids": [ "cx:ms", "cx:s" ], "quantity_kinds": [ "duration" ], "kind_label": "Time interval", "dimension": [ 0, 0, 1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General" ], "definition_lines": [ "1 ms = 0.001 s." ], "normalized_transform": { "reference_unit": "cx:s", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/millisecond", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 7 prefixes; Table 8: day = 24 h = 86400 s" } ] }, { "unit_id": "cx:us", "slug": "microsecond", "name": "Microsecond", "symbol": "µs", "code": "us", "aliases": [ "microsecond", "μs", "us" ], "quantity_kind": "duration", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:s", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 7 prefixes; Table 8: day = 24 h = 86400 s" } ], "scope": "Elapsed duration only. A calendar day across time-zone or daylight-saving transitions is a different operation.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "duration.s", "usage_status": "current", "content_digest": "42d15c58ef2bdaf12b1b85e2cfba04c1aba36907e6e582ae054afe0f5bf57605", "dependency_digest": "82fdd5cbb404b06e98796afa3e8193a3f896f8d3738205a75e062f80cace1f3f", "dependency_ids": [ "cx:s", "cx:us" ], "quantity_kinds": [ "duration" ], "kind_label": "Time interval", "dimension": [ 0, 0, 1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General" ], "definition_lines": [ "1 µs = 0.000001 s." ], "normalized_transform": { "reference_unit": "cx:s", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/microsecond", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 7 prefixes; Table 8: day = 24 h = 86400 s" } ] }, { "unit_id": "cx:d", "slug": "day", "name": "Day", "symbol": "d", "code": "d", "aliases": [ "day" ], "quantity_kind": "duration", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:s", "scale": { "numerator": "86400", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 7 prefixes; Table 8: day = 24 h = 86400 s" } ], "scope": "Elapsed duration only. A calendar day across time-zone or daylight-saving transitions is a different operation.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "duration.s", "usage_status": "current", "content_digest": "dadbe8661bb63e31be589afc19c4b843e9e890d7ca87de6be7d65cafe3de887e", "dependency_digest": "2c4711ae40137c657227ff94f09867684b14878dd5254d88c3edffa002f61f86", "dependency_ids": [ "cx:d", "cx:s" ], "quantity_kinds": [ "duration" ], "kind_label": "Time interval", "dimension": [ 0, 0, 1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General" ], "definition_lines": [ "1 d = 86400 s." ], "normalized_transform": { "reference_unit": "cx:s", "scale": { "numerator": "86400", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/day", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 7 prefixes; Table 8: day = 24 h = 86400 s" } ] }, { "unit_id": "cx:degR", "slug": "degree-rankine", "name": "Degree Rankine", "symbol": "°R", "code": "degR", "aliases": [ "rankine" ], "quantity_kind": "temperature", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:K", "scale": { "numerator": "5", "denominator": "9" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Degree Rankine: T/K = (T/°R)/1.8; intervals use the same slope" } ], "scope": "Point and interval roles are distinct. Rankine points share the absolute zero of Kelvin.", "legacy_tools": [], "systems": [ "us_customary" ], "family_id": "temperature.k", "usage_status": "current", "content_digest": "599b270744d754c851db3d731aa179168507413b3d494f4309bd4979c22018c7", "dependency_digest": "5135007ac9da9747bf17995ad9275e983d688124dedd907c8b950eda9e32b4b2", "dependency_ids": [ "cx:K", "cx:degR" ], "quantity_kinds": [ "temperature" ], "kind_label": "Temperature", "dimension": [ 0, 0, 0, 0, 1, 0, 0 ], "roles": [ "point", "interval" ], "domains": [ "Thermal", "General", "Chemistry" ], "definition_lines": [ "Temperature values: value in K = 5/9 × value in °R + 0.", "Temperature differences: value in K = 5/9 × value in °R; no offset." ], "normalized_transform": { "reference_unit": "cx:K", "scale": { "numerator": "5", "denominator": "9" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/degree-rankine", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Degree Rankine: T/K = (T/°R)/1.8; intervals use the same slope" } ] }, { "unit_id": "cx:rad", "slug": "radian", "name": "Radian", "symbol": "rad", "code": "rad", "aliases": [ "radians" ], "quantity_kind": "plane_angle", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:rad", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Plane angle, not a generic ratio, solid angle, or frequency. No implicit wrap or principal-angle reduction.", "legacy_tools": [ { "label": "Radians to degrees", "href": "/convert/number/radians-to-degrees", "role": "scalar" } ], "systems": [ "si_coherent" ], "family_id": "plane_angle.rad", "usage_status": "current", "content_digest": "842467a958d28ac79bf34e796043449f6af24819d77b2b67f540dbabdecc8e3e", "dependency_digest": "9c07023393c6212aab52719f503df1bdc9456559b5c4719ff1fec47d0623e0ad", "dependency_ids": [ "cx:rad" ], "quantity_kinds": [ "plane_angle" ], "kind_label": "Plane angle", "dimension": [ 0, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical", "Optics" ], "definition_lines": [ "SI reference unit for plane angle." ], "normalized_transform": { "reference_unit": "cx:rad", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/radian", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:deg", "slug": "degree", "name": "Degree", "symbol": "°", "code": "deg", "aliases": [ "degree", "degrees", "deg" ], "quantity_kind": "plane_angle", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:rad", "scale": { "numerator": "1", "denominator": "180", "pi_power": 1 }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 8: degree = (pi/180) rad exactly" } ], "scope": "Plane angle. Distinct from temperature degree symbols; exact pi coefficient, not a rounded decimal conversion.", "legacy_tools": [ { "label": "Degrees to radians", "href": "/convert/number/degrees-to-radians", "role": "scalar" } ], "systems": [ "si_accepted" ], "family_id": "plane_angle.rad", "usage_status": "current", "content_digest": "ebb31e3abee53f3bf57339c87949e1018d141739fba8a07f54c42ebfd219262b", "dependency_digest": "eef386126ec6524884c84bab06f2a96996df913376c0ce5ccdaca0e7faf7b9c3", "dependency_ids": [ "cx:deg", "cx:rad" ], "quantity_kinds": [ "plane_angle" ], "kind_label": "Plane angle", "dimension": [ 0, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical", "Optics" ], "definition_lines": [ "1 ° = 1/180 × π rad." ], "normalized_transform": { "reference_unit": "cx:rad", "scale": { "numerator": "1", "denominator": "180", "pi_power": 1 }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/degree", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 8: degree = (pi/180) rad exactly" } ] }, { "unit_id": "cx:arcmin", "slug": "arcminute", "name": "Arcminute", "symbol": "′", "code": "arcmin", "aliases": [ "arc minute", "minute of arc", "minute" ], "quantity_kind": "plane_angle", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:rad", "scale": { "numerator": "1", "denominator": "10800", "pi_power": 1 }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 8: minute of plane angle = degree/60" } ], "scope": "Minute of plane angle, not an elapsed time minute. Resolve the quantity kind explicitly.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "plane_angle.rad", "usage_status": "current", "content_digest": "758f55989edbff75d6c717d2f5a9759b86c5542243c233a4e58710014ce0b3a2", "dependency_digest": "3fdb19ff9ad7f16c5ebd38cb9bf228bb4c5c2f1cc0d4d04f27499ad6bec59e3c", "dependency_ids": [ "cx:arcmin", "cx:rad" ], "quantity_kinds": [ "plane_angle" ], "kind_label": "Plane angle", "dimension": [ 0, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical", "Optics" ], "definition_lines": [ "1 ′ = 1/10800 × π rad." ], "normalized_transform": { "reference_unit": "cx:rad", "scale": { "numerator": "1", "denominator": "10800", "pi_power": 1 }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/arcminute", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 8: minute of plane angle = degree/60" } ] }, { "unit_id": "cx:arcsec", "slug": "arcsecond", "name": "Arcsecond", "symbol": "″", "code": "arcsec", "aliases": [ "arc second", "second of arc", "second" ], "quantity_kind": "plane_angle", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:rad", "scale": { "numerator": "1", "denominator": "648000", "pi_power": 1 }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 8: second of plane angle = minute/60" } ], "scope": "Second of plane angle, not an elapsed time second.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "plane_angle.rad", "usage_status": "current", "content_digest": "ee3afa01d781bd1fb9dc9b9eca25fb002286b25e998eef6d2cdec59943d0559f", "dependency_digest": "bb352b1779741a1a0c55f6ecf5f7beacf1b2d4fee226adad5ed2ec173da3093b", "dependency_ids": [ "cx:arcsec", "cx:rad" ], "quantity_kinds": [ "plane_angle" ], "kind_label": "Plane angle", "dimension": [ 0, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical", "Optics" ], "definition_lines": [ "1 ″ = 1/648000 × π rad." ], "normalized_transform": { "reference_unit": "cx:rad", "scale": { "numerator": "1", "denominator": "648000", "pi_power": 1 }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/arcsecond", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 8: second of plane angle = minute/60" } ] }, { "unit_id": "cx:turn", "slug": "turn", "name": "Turn", "symbol": "turn", "code": "turn", "aliases": [ "revolution", "rev", "full turn", "turns" ], "quantity_kind": "plane_angle", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:rad", "scale": { "numerator": "2", "denominator": "1", "pi_power": 1 }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 4 note on radian: full circle is 2 pi rad" } ], "scope": "One complete plane rotation = 2 pi rad; no automatic modulo reduction.", "legacy_tools": [], "systems": [ "other" ], "family_id": "plane_angle.rad", "usage_status": "current", "content_digest": "63f3c9bdf5052eb3bfd702092843ffa685421fdbfc83ee1ed4de9cab5de46138", "dependency_digest": "d5f1764d2594e7087b7a5f7506ca6ab7e23bed30e2be929aa4686abbd717418b", "dependency_ids": [ "cx:rad", "cx:turn" ], "quantity_kinds": [ "plane_angle" ], "kind_label": "Plane angle", "dimension": [ 0, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical", "Optics" ], "definition_lines": [ "1 turn = 2 × π rad." ], "normalized_transform": { "reference_unit": "cx:rad", "scale": { "numerator": "2", "denominator": "1", "pi_power": 1 }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/turn", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 4 note on radian: full circle is 2 pi rad" } ] }, { "unit_id": "cx:gon", "slug": "gon", "name": "Gon", "symbol": "gon", "code": "gon", "aliases": [ "grad", "gradian", "gons" ], "quantity_kind": "plane_angle", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:rad", "scale": { "numerator": "1", "denominator": "200", "pi_power": 1 }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:sedris-gon", "locator": "EDCS EU GON: 1 gon = pi/200 rad" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "other" ], "family_id": "plane_angle.rad", "usage_status": "current", "content_digest": "bf4563125fd3f5056f5ba851633e189bdea48716308a82f96a20d098457f73ad", "dependency_digest": "019add5308224ce7c0ca2518eb94f4ab223dc1f0d1d4d9664bc718a2b0e3f90d", "dependency_ids": [ "cx:gon", "cx:rad" ], "quantity_kinds": [ "plane_angle" ], "kind_label": "Plane angle", "dimension": [ 0, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical", "Optics" ], "definition_lines": [ "1 gon = 0.005 × π rad." ], "normalized_transform": { "reference_unit": "cx:rad", "scale": { "numerator": "1", "denominator": "200", "pi_power": 1 }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gon", "verification": "not_assessed", "sources": [ { "id": "source:sedris-gon", "publisher": "SEDRIS", "title": "EDCS unit of measure GON", "url": "https://edcsreg.sedris.org/browse/eu/GON/", "edition": "EDCS registry unit GON, accessed 2026-10-29", "checked_at": "2026-10-29", "reuse_note": "Factual definition metadata with attribution; no source text, images or private validation assets redistributed.", "locator": "EDCS EU GON: 1 gon = pi/200 rad" } ] }, { "unit_id": "cx:mrad", "slug": "milliradian", "name": "Milliradian", "symbol": "mrad", "code": "mrad", "aliases": [ "milliradians" ], "quantity_kind": "plane_angle", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:rad", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "plane_angle.rad", "usage_status": "current", "content_digest": "7b7bd3368a90163de38ae1b6eec0737991dd36de8e062c1763148558d8efef3a", "dependency_digest": "08b1b56837d701517c73a3b3198b0128dbe9e5b680bc314d660cee7af8a4d740", "dependency_ids": [ "cx:mrad", "cx:rad" ], "quantity_kinds": [ "plane_angle" ], "kind_label": "Plane angle", "dimension": [ 0, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical", "Optics" ], "definition_lines": [ "1 mrad = 0.001 rad." ], "normalized_transform": { "reference_unit": "cx:rad", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/milliradian", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:sr", "slug": "steradian", "name": "Steradian", "symbol": "sr", "code": "sr", "aliases": [ "steradians" ], "quantity_kind": "solid_angle", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:sr", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Solid angle; not interchangeable with plane angle or a generic ratio despite SI dimension one.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "solid_angle.sr", "usage_status": "current", "content_digest": "2076ec216e51b13d7a17d5a8871f0d7191bb210014713e91528a20fe0d091207", "dependency_digest": "3d0ad353035e4bb181b911cbf97f24d6a87889053da13bd5096ce4c735832f3b", "dependency_ids": [ "cx:sr" ], "quantity_kinds": [ "solid_angle" ], "kind_label": "Solid angle", "dimension": [ 0, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Optics" ], "definition_lines": [ "SI reference unit for solid angle." ], "normalized_transform": { "reference_unit": "cx:sr", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/steradian", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:one", "slug": "one", "name": "One", "symbol": "1", "code": "one", "aliases": [ "unitless", "dimensionless ratio" ], "quantity_kind": "ratio", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:one", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Dimensionless ratio. 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A concentration must additionally declare mass/mass, volume/volume, mole fraction or other appropriate basis.", "legacy_tools": [], "systems": [ "other" ], "family_id": "ratio.one", "usage_status": "current", "content_digest": "1983c1456c8233b99e85c883626c8fc0ff947879b215f4ed4319e013f3b1647b", "dependency_digest": "a0c9eb8b9e3eceb6ef8230e1dd5e24da3424791639ec060bd6b75d0f3cf47b9d", "dependency_ids": [ "cx:one", "cx:ppm" ], "quantity_kinds": [ "ratio" ], "kind_label": "Ratio", "dimension": [ 0, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Chemistry" ], "definition_lines": [ "1 ppm = 0.000001 1." ], "normalized_transform": { "reference_unit": "cx:one", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/parts-per-million", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Section 5.4.7: ratio quantities and ppm = 1e-6" } ] }, { "unit_id": "cx:m2", "slug": "square-metre", "name": "Square metre", "symbol": "m²", "code": "m2", "aliases": [ "m^2", "m2", "square meter" ], "quantity_kind": "area", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:m2", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "area.m2", "usage_status": "current", "expression": { "cx:m": 2 }, "content_digest": "32ffcf6942768980533b7120548b199e7af9ed659bb56014f58a9c5f599ee9b1", "dependency_digest": "e7d067f54a0e27bc113b81432063295adafef29196f97fa29842e7233d615f12", "dependency_ids": [ "cx:m", "cx:m2" ], "quantity_kinds": [ "area" ], "kind_label": "Area", "dimension": [ 2, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 m² = (1 m)^2." ], "normalized_transform": { "reference_unit": "cx:m2", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/square-metre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:cm2", "slug": "square-centimetre", "name": "Square centimetre", "symbol": "cm²", "code": "cm2", "aliases": [ "cm2" ], "quantity_kind": "area", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m2", "scale": { "numerator": "1", "denominator": "10000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. 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The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "area.m2", "usage_status": "current", "expression": { "cx:km": 2 }, "content_digest": "ade080bb35c68ad8bd7de1fab0b3d8a972d9a932110dcd85f83cdc847360c059", "dependency_digest": "a97dcdd80768727dae5ac3e77749db67022a0f1a7e0505116c6a7a65a1cf4f97", "dependency_ids": [ "cx:km", "cx:km2", "cx:m", "cx:m2" ], "quantity_kinds": [ "area" ], "kind_label": "Area", "dimension": [ 2, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 km² = (1 km)^2." ], "normalized_transform": { "reference_unit": "cx:m2", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/square-kilometre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:ha", "slug": "hectare", "name": "Hectare", "symbol": "ha", "code": "ha", "aliases": [], "quantity_kind": "area", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m2", "scale": { "numerator": "10000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 8: hectare = 10000 square metres" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "area.m2", "usage_status": "current", "content_digest": "85d1e6641dd3428fb8ea2ee9671cf18f1bb798968374287cec91d3007d1a3802", "dependency_digest": "eff3c69ec8774605ccb65553a706b3d1d2cfbca6a07027e0706b5d2cbfa76deb", "dependency_ids": [ "cx:ha", "cx:m", "cx:m2" ], "quantity_kinds": [ "area" ], "kind_label": "Area", "dimension": [ 2, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 ha = 10000 m²." ], "normalized_transform": { "reference_unit": "cx:m2", "scale": { "numerator": "10000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/hectare", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 8: hectare = 10000 square metres" } ] }, { "unit_id": "cx:cm3", "slug": "cubic-centimetre", "name": "Cubic centimetre", "symbol": "cm³", "code": "cm3", "aliases": [ "cm^3", "cm3" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "volume.m3", "usage_status": "current", "expression": { "cx:cm": 3 }, "applicable_quantity_kinds": [ "volume", "section_modulus" ], "content_digest": "cd9b1a4ed59d957173e4ac99971cdb1fcf557bb07c17970838abdb8d7654bacd", "dependency_digest": "30508e1bc162d2aa4f44953720a663a867e53503ce007966d44622f0a5920741", "dependency_ids": [ "cx:cm", "cx:cm3", "cx:m", "cx:m3" ], "quantity_kinds": [ "volume", "section_modulus" ], "kind_label": "Volume / Section modulus", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry", "Mechanical" ], "definition_lines": [ "1 cm³ = (1 cm)^3." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/cubic-centimetre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:uL", "slug": "microlitre", "name": "Microlitre", "symbol": "µL", "code": "uL", "aliases": [ "microliter", "μL", "uL" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 8 litre = 1e-3 m3; Table 7 micro = 1e-6" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "volume.m3", "usage_status": "current", "content_digest": "6557d2d911cd954ddfa2152b17702a56ee305e8816fc3cf7c05eb23a53ed2b0a", "dependency_digest": "3b82f10ad10542b4d0595ae6994953c1cfa9932e7b579b249edff99e8bcfd24d", "dependency_ids": [ "cx:m", "cx:m3", "cx:uL" ], "quantity_kinds": [ "volume" ], "kind_label": "Volume", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry" ], "definition_lines": [ "1 µL = 0.000000001 m³." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/microlitre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 8 litre = 1e-3 m3; Table 7 micro = 1e-6" } ] }, { "unit_id": "cx:Hz", "slug": "hertz", "name": "Hertz", "symbol": "Hz", "code": "Hz", "aliases": [], "quantity_kind": "frequency", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:Hz", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Frequency of periodic phenomena. Angular velocity has a distinct quantity kind; conversion requires an explicit relation.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "frequency.hz", "usage_status": "current", "expression": { "cx:s": -1 }, "content_digest": "bc628774026ee1d148ddc9f971d74593157c3f7d0d58d34528d9129fdf8d04c6", "dependency_digest": "78632cc1495ec087e24842a88a8855bd1cae87f3894c279c0853b5505565388b", "dependency_ids": [ "cx:Hz", "cx:s" ], "quantity_kinds": [ "frequency" ], "kind_label": "Frequency", "dimension": [ 0, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "General" ], "definition_lines": [ "1 Hz = (1 s)^-1." ], "normalized_transform": { "reference_unit": "cx:Hz", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/hertz", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:kHz", "slug": "kilohertz", "name": "Kilohertz", "symbol": "kHz", "code": "kHz", "aliases": [], "quantity_kind": "frequency", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Hz", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "frequency.hz", "usage_status": "current", "content_digest": "c2a439258d779657b9a7de686980c9331859a484746e6f5bc0d0b81888784751", "dependency_digest": "97b0b9e6cfe3c3475e24d9e615872daf0d5a00cde9d76564ff4ecd67f5ef7c65", "dependency_ids": [ "cx:Hz", "cx:kHz", "cx:s" ], "quantity_kinds": [ "frequency" ], "kind_label": "Frequency", "dimension": [ 0, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "General" ], "definition_lines": [ "1 kHz = 1000 Hz." ], "normalized_transform": { "reference_unit": "cx:Hz", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilohertz", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:MHz", "slug": "megahertz", "name": "Megahertz", "symbol": "MHz", "code": "MHz", "aliases": [], "quantity_kind": "frequency", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Hz", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "frequency.hz", "usage_status": "current", "content_digest": "eb75097dacadb7b90fd2236096402ad586a351fdc03ee8e87db37bcd12860c14", "dependency_digest": "952af32e82b562c40596ff3f9aed5daffdb22e806802fcdeb249b2525bae2228", "dependency_ids": [ "cx:Hz", "cx:MHz", "cx:s" ], "quantity_kinds": [ "frequency" ], "kind_label": "Frequency", "dimension": [ 0, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "General" ], "definition_lines": [ "1 MHz = 1000000 Hz." ], "normalized_transform": { "reference_unit": "cx:Hz", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/megahertz", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:GHz", "slug": "gigahertz", "name": "Gigahertz", "symbol": "GHz", "code": "GHz", "aliases": [], "quantity_kind": "frequency", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Hz", "scale": { "numerator": "1000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "frequency.hz", "usage_status": "current", "content_digest": "03934441644628f5580ee9bd896ff7b71cc1cc4c74848676d18ad044394e80f0", "dependency_digest": "7647e71b4633ebdda5d967cb6578a381c1c109a3a92bcf1a2dfebb55587a9953", "dependency_ids": [ "cx:GHz", "cx:Hz", "cx:s" ], "quantity_kinds": [ "frequency" ], "kind_label": "Frequency", "dimension": [ 0, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "General" ], "definition_lines": [ "1 GHz = 1000000000 Hz." ], "normalized_transform": { "reference_unit": "cx:Hz", "scale": { "numerator": "1000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gigahertz", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:rad_s", "slug": "radian-per-second", "name": "Radian per second", "symbol": "rad/s", "code": "rad_s", "aliases": [ "rad/s", "radians per second" ], "quantity_kind": "angular_velocity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:rad_s", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Angular velocity. Hertz is not silently treated as rad/s.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "angular_velocity.rad_s", "usage_status": "current", "expression": { "cx:rad": 1, "cx:s": -1 }, "content_digest": "e9160e110c83bbbdd45d144ccf0370ad23fb940c6f8914190f28d4de7280a268", "dependency_digest": "dea1cb1b802a687255a34b84ac75c8e54905c87c604c0866ae8a98409fdd434d", "dependency_ids": [ "cx:rad", "cx:rad_s", "cx:s" ], "quantity_kinds": [ "angular_velocity" ], "kind_label": "Angular velocity", "dimension": [ 0, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 rad/s = (1 rad)^1 × (1 s)^-1." ], "normalized_transform": { "reference_unit": "cx:rad_s", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/radian-per-second", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:rpm", "slug": "revolution-per-minute", "name": "Revolution per minute", "symbol": "rpm", "code": "rpm", "aliases": [ "rev/min" ], "quantity_kind": "angular_velocity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:rad_s", "scale": { "numerator": "1", "denominator": "30", "pi_power": 1 }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Radian full-turn definition and Table 8 minute: 2 pi / 60 rad/s" } ], "scope": "Definition metadata only. 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The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "force.n", "usage_status": "current", "content_digest": "1e25a4c081bd24c6cc9f086c7ff4ede0e4f2c51aae04fccec87064a591360a27", "dependency_digest": "a0812cff0fa522f357db11ab0f216e0df09179b6c4c54c835572755b25b2f913", "dependency_ids": [ "cx:N", "cx:kN", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "force" ], "kind_label": "Force", "dimension": [ 1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 kN = 1000 N." ], "normalized_transform": { "reference_unit": "cx:N", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilonewton", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:Pa", "slug": "pascal", "name": "Pascal", "symbol": "Pa", "code": "Pa", "aliases": [], "quantity_kind": "pressure", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:Pa", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Pascal is used for pressure and stress; model-field compatibility and absolute/gauge reference must be declared separately.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "pressure.pa", "usage_status": "current", "expression": { "cx:N": 1, "cx:m": -2 }, "content_digest": "817c1307614711622d16bc5f6b5a35ec5094d4a25106baeb9b5c94770ecaab3d", "dependency_digest": "295444399185d2269830440f80a352d68f25d112056ffc7d08862077073f4785", "dependency_ids": [ "cx:N", "cx:Pa", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "pressure" ], "kind_label": "Pressure", "dimension": [ -1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Fluids" ], "definition_lines": [ "1 Pa = (1 N)^1 × (1 m)^-2." ], "normalized_transform": { "reference_unit": "cx:Pa", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/pascal", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:mPa", "slug": "millipascal", "name": "Millipascal", "symbol": "mPa", "code": "mPa", "aliases": [], "quantity_kind": "pressure", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Pa", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Case-sensitive symbol: mPa and MPa have different scales. Pressure reference is a separate model contract.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "pressure.pa", "usage_status": "current", "content_digest": "54146d633e5b5b2b74a3a007c2927bf607375d431369514e93c64262f5906e66", "dependency_digest": "bbc62674c25800966ea4180b87a7adc03af9ca674a4aeb42779317565259e93c", "dependency_ids": [ "cx:N", "cx:Pa", "cx:kg", "cx:m", "cx:mPa", "cx:s" ], "quantity_kinds": [ "pressure" ], "kind_label": "Pressure", "dimension": [ -1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Fluids" ], "definition_lines": [ "1 mPa = 0.001 Pa." ], "normalized_transform": { "reference_unit": "cx:Pa", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/millipascal", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:kPa", "slug": "kilopascal", "name": "Kilopascal", "symbol": "kPa", "code": "kPa", "aliases": [], "quantity_kind": "pressure", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Pa", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Case-sensitive symbol: mPa and MPa have different scales. Pressure reference is a separate model contract.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "pressure.pa", "usage_status": "current", "content_digest": "0262415fd5877e45b2724bdc4f47572954d667be46bb973b0937859731fc2c77", "dependency_digest": "d5a553a219e22230018dd7ba8fbd17aa3f2700f987d3212171d7adaa8a48a5c0", "dependency_ids": [ "cx:N", "cx:Pa", "cx:kPa", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "pressure" ], "kind_label": "Pressure", "dimension": [ -1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Fluids" ], "definition_lines": [ "1 kPa = 1000 Pa." ], "normalized_transform": { "reference_unit": "cx:Pa", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilopascal", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:MPa", "slug": "megapascal", "name": "Megapascal", "symbol": "MPa", "code": "MPa", "aliases": [], "quantity_kind": "pressure", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Pa", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Case-sensitive symbol: mPa and MPa have different scales. Pressure reference is a separate model contract.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "pressure.pa", "usage_status": "current", "content_digest": "f4be6c6a5d5a53479e9109f0e81db9d3cefa539f9763537343e58d93943f673d", "dependency_digest": "0bc9ffcab2af67d67a729fb6ff1413f1be08a78ea8338452e3e186955853b9e3", "dependency_ids": [ "cx:MPa", "cx:N", "cx:Pa", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "pressure" ], "kind_label": "Pressure", "dimension": [ -1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Fluids" ], "definition_lines": [ "1 MPa = 1000000 Pa." ], "normalized_transform": { "reference_unit": "cx:Pa", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/megapascal", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:bar", "slug": "bar", "name": "Bar", "symbol": "bar", "code": "bar", "aliases": [], "quantity_kind": "pressure", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Pa", "scale": { "numerator": "100000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 8: bar = 100000 Pa" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "other" ], "family_id": "pressure.pa", "usage_status": "current", "content_digest": "ab77424a082a9ff6d2c4863ecc551e90d3ada9f05f3d8eb0f506a71e1bcb4bcb", "dependency_digest": "7dbb940446769c02646bc8e4e35419f69d3a589fffb91bd32092c4495dd89dfc", "dependency_ids": [ "cx:N", "cx:Pa", "cx:bar", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "pressure" ], "kind_label": "Pressure", "dimension": [ -1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Fluids" ], "definition_lines": [ "1 bar = 100000 Pa." ], "normalized_transform": { "reference_unit": "cx:Pa", "scale": { "numerator": "100000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/bar", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 8: bar = 100000 Pa" } ] }, { "unit_id": "cx:atm", "slug": "standard-atmosphere", "name": "Standard atmosphere", "symbol": "atm", "code": "atm", "aliases": [], "quantity_kind": "pressure", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Pa", "scale": { "numerator": "101325", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Standard atmosphere = 101325 Pa exactly; not local measured atmospheric pressure" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "other" ], "family_id": "pressure.pa", "usage_status": "current", "content_digest": "d302e66c89c596dcb615d6a50ad64fe365a36c7e3f5db98ea6821e1d2303dc86", "dependency_digest": "9f40a6c3df2f087926512482cd8494bae38e5bb643b66302bebc2004b108189a", "dependency_ids": [ "cx:N", "cx:Pa", "cx:atm", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "pressure" ], "kind_label": "Pressure", "dimension": [ -1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Fluids" ], "definition_lines": [ "1 atm = 101325 Pa." ], "normalized_transform": { "reference_unit": "cx:Pa", "scale": { "numerator": "101325", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/standard-atmosphere", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Standard atmosphere = 101325 Pa exactly; not local measured atmospheric pressure" } ] }, { "unit_id": "cx:J", "slug": "joule", "name": "Joule", "symbol": "J", "code": "J", "aliases": [], "quantity_kind": "energy", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:J", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Energy. Torque has the same SI dimension but a separate quantity kind.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "energy.j", "usage_status": "current", "expression": { "cx:N": 1, "cx:m": 1 }, "content_digest": "b1ae866baa2ce45efbf8c7e8f264879cab6738a2501e3a54c3c1aca6d70ae97c", "dependency_digest": "67f4bc23f1d13fc7b72062f85ab8f2c144b605b1555b9b655167c7618c0fee9e", "dependency_ids": [ "cx:J", "cx:N", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "energy" ], "kind_label": "Energy", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Thermal", "Electrical" ], "definition_lines": [ "1 J = (1 N)^1 × (1 m)^1." ], "normalized_transform": { "reference_unit": "cx:J", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/joule", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:kJ", "slug": "kilojoule", "name": "Kilojoule", "symbol": "kJ", "code": "kJ", "aliases": [], "quantity_kind": "energy", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:J", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "energy.j", "usage_status": "current", "content_digest": "491f1a4038edb91567cea342611e8b74798c31072c659cb154d6d49f16c525ef", "dependency_digest": "af9c1ecf3e8c346be957e8ea5e7fe685e403f0729ad3bcdb397dac8ba8789415", "dependency_ids": [ "cx:J", "cx:N", "cx:kJ", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "energy" ], "kind_label": "Energy", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Thermal", "Electrical" ], "definition_lines": [ "1 kJ = 1000 J." ], "normalized_transform": { "reference_unit": "cx:J", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilojoule", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:Wh", "slug": "watt-hour", "name": "Watt hour", "symbol": "Wh", "code": "Wh", "aliases": [], "quantity_kind": "energy", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:J", "scale": { "numerator": "3600", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 4 watt = joule/second; Table 8 hour = 3600 s" } ], "scope": "Energy, not power. W to Wh requires an explicit power/time model.", "legacy_tools": [], "systems": [ "other" ], "family_id": "energy.j", "usage_status": "current", "content_digest": "a7637548904cbc58d53bfbe1245b4ff22006bf9ffabaeb80af7a23a1c60f27b3", "dependency_digest": "3defdefe4e336c0accaf1f282c8367d1ae49cc6f829e99aa2ae849aca1793ede", "dependency_ids": [ "cx:J", "cx:N", "cx:Wh", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "energy" ], "kind_label": "Energy", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Thermal", "Electrical" ], "definition_lines": [ "1 Wh = 3600 J." ], "normalized_transform": { "reference_unit": "cx:J", "scale": { "numerator": "3600", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/watt-hour", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 4 watt = joule/second; Table 8 hour = 3600 s" } ] }, { "unit_id": "cx:kWh", "slug": "kilowatt-hour", "name": "Kilowatt hour", "symbol": "kWh", "code": "kWh", "aliases": [], "quantity_kind": "energy", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:J", "scale": { "numerator": "3600000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Watt = joule/second; kilo = 1000; hour = 3600 s" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "other" ], "family_id": "energy.j", "usage_status": "current", "content_digest": "08868f8773823f5d8cf416ceb2d61b73a94f9a7be3df10d054aec23017ef3b63", "dependency_digest": "35d6772403f6c53ea48ba8df86308b47d0370bc12dd601b6632b162bac49dbef", "dependency_ids": [ "cx:J", "cx:N", "cx:kWh", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "energy" ], "kind_label": "Energy", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Thermal", "Electrical" ], "definition_lines": [ "1 kWh = 3600000 J." ], "normalized_transform": { "reference_unit": "cx:J", "scale": { "numerator": "3600000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilowatt-hour", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Watt = joule/second; kilo = 1000; hour = 3600 s" } ] }, { "unit_id": "cx:N_m", "slug": "newton-metre", "name": "Newton metre", "symbol": "N·m", "code": "N_m", "aliases": [ "N*m", "N m" ], "quantity_kind": "torque", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:N_m", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Torque. Do not silently convert to energy solely because its dimension equals joule.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "torque.n_m", "usage_status": "current", "expression": { "cx:N": 1, "cx:m": 1 }, "content_digest": "b8f3c1f13337d691059aa7cbe3fe3c8e7d715f32acfec90ab3fa7d379718deb4", "dependency_digest": "5581be8a7aee326a90e3b483037e39d6be9a766718505a3bd76c2a4ffd591e7b", "dependency_ids": [ "cx:N", "cx:N_m", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "torque" ], "kind_label": "Torque", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 N·m = (1 N)^1 × (1 m)^1." ], "normalized_transform": { "reference_unit": "cx:N_m", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/newton-metre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:W", "slug": "watt", "name": "Watt", "symbol": "W", "code": "W", "aliases": [], "quantity_kind": "power", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:W", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Power. Conversion to energy requires an explicit time/model contract.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "power.w", "usage_status": "current", "expression": { "cx:J": 1, "cx:s": -1 }, "content_digest": "f92e94e5b1f789fe1c208ac38ac88b1012f3af45009e034aa29a28a65c9cef34", "dependency_digest": "75da305a77391434ed9e63cff9f5220df96618623f6bf11dcfca663a58c11cc2", "dependency_ids": [ "cx:J", "cx:N", "cx:W", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "power" ], "kind_label": "Power", "dimension": [ 2, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "Mechanical", "Thermal" ], "definition_lines": [ "1 W = (1 J)^1 × (1 s)^-1." ], "normalized_transform": { "reference_unit": "cx:W", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/watt", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:mW", "slug": "milliwatt", "name": "Milliwatt", "symbol": "mW", "code": "mW", "aliases": [], "quantity_kind": "power", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:W", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "power.w", "usage_status": "current", "content_digest": "3a2f8386e25d461e3049a67ad867c75a7abf136de1999dca5770ae5aa8cd4989", "dependency_digest": "ca6c3608e5048479b1f7ef17e0011412168b8032804235c29bc68361bbef98d7", "dependency_ids": [ "cx:J", "cx:N", "cx:W", "cx:kg", "cx:m", "cx:mW", "cx:s" ], "quantity_kinds": [ "power" ], "kind_label": "Power", "dimension": [ 2, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "Mechanical", "Thermal" ], "definition_lines": [ "1 mW = 0.001 W." ], "normalized_transform": { "reference_unit": "cx:W", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/milliwatt", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:kW", "slug": "kilowatt", "name": "Kilowatt", "symbol": "kW", "code": "kW", "aliases": [], "quantity_kind": "power", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:W", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. 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The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "power.w", "usage_status": "current", "content_digest": "1768a82c41cb3f86b6e1a5d2526f8f9ef3b581b1444e4e36403ddae4ee40ac93", "dependency_digest": "5779782070bdd0398ef7124375f182254bb028f56d0edc735e2668ce58dfe2d5", "dependency_ids": [ "cx:J", "cx:MW", "cx:N", "cx:W", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "power" ], "kind_label": "Power", "dimension": [ 2, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "Mechanical", "Thermal" ], "definition_lines": [ "1 MW = 1000000 W." ], "normalized_transform": { "reference_unit": "cx:W", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/megawatt", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:A", "slug": "ampere", "name": "Ampere", "symbol": "A", "code": "A", "aliases": [], "quantity_kind": "electric_current", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:A", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "electric_current.a", "usage_status": "current", "content_digest": "9358b1895f35b5ddb41c4de300d8b90cff4cf7f678100d1d90a8f6b89b4583fd", "dependency_digest": "047d7644f3d25caec76b710b0372e8f79f30667e51c496e66ad7d2d9df394d3a", "dependency_ids": [ "cx:A" ], "quantity_kinds": [ "electric_current" ], "kind_label": "Electric current", "dimension": [ 0, 0, 0, 1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "SI reference unit for electric current." ], "normalized_transform": { "reference_unit": "cx:A", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/ampere", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:mA", "slug": "milliampere", "name": "Milliampere", "symbol": "mA", "code": "mA", "aliases": [ "mA" ], "quantity_kind": "electric_current", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:A", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electric_current.a", "usage_status": "current", "content_digest": "1a1b1d7841cb0a98b79e4863a7768969c0882eec227a991e6bb311e5354c3572", "dependency_digest": "dd266d70328653ff1730877beffdf14c30602e703124a214e3a8a78e43f25e1b", "dependency_ids": [ "cx:A", "cx:mA" ], "quantity_kinds": [ "electric_current" ], "kind_label": "Electric current", "dimension": [ 0, 0, 0, 1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 mA = 0.001 A." ], "normalized_transform": { "reference_unit": "cx:A", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/milliampere", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ] }, { "unit_id": "cx:uA", "slug": "microampere", "name": "Microampere", "symbol": "µA", "code": "uA", "aliases": [ "uA", "μA" ], "quantity_kind": "electric_current", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:A", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 2, 4 and 5: SI units; Table 7: SI prefixes" } ], "scope": "Definition metadata only. 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Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "length.m", "usage_status": "current", "content_digest": "9a4a52ea4fa00208ad2016c113044a800c51a013298a4b74392afa0a3799d36d", "dependency_digest": "20bafe3fb1513012a9f507be88c4db207399480ecbc2c2f77a88529b118402f8", "dependency_ids": [ "cx:dm", "cx:m" ], "quantity_kinds": [ "length" ], "kind_label": "Length", "dimension": [ 1, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 dm = 0.1 m." ], "normalized_transform": { "reference_unit": "cx:m", "scale": { "numerator": "1", "denominator": "10" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/decimetre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:pm", "slug": "picometre", "name": "Picometre", "symbol": "pm", "code": "pm", "aliases": [], "quantity_kind": "length", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m", "scale": { "numerator": "1", "denominator": "1000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. 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Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "power.w", "usage_status": "current", "content_digest": "673a6007f75efe3d706a718cd2d7dc7d2dee0253468edd82bf0b20eb02ae5158", "dependency_digest": "05dab6ebc2ed234b4829506fcbb0ddb613ac3a3ea21e3010cd8d904f782508eb", "dependency_ids": [ "cx:GW", "cx:J", "cx:N", "cx:W", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "power" ], "kind_label": "Power", "dimension": [ 2, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "Mechanical", "Thermal" ], "definition_lines": [ "1 GW = 1000000000 W." ], "normalized_transform": { "reference_unit": "cx:W", "scale": { "numerator": "1000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gigawatt", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:uW", "slug": "microwatt", "name": "Microwatt", "symbol": "µW", "code": "uW", "aliases": [ "μW", "uW" ], "quantity_kind": "power", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:W", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "power.w", "usage_status": "current", "content_digest": "838f5442ff7a4a811dbb5ba341de9c71b2760aafc88228960b9bb52712d35797", "dependency_digest": "18c249d894124a11b1b22eeb767b8653b4f54ce2699315080d18bdeb111c8578", "dependency_ids": [ "cx:J", "cx:N", "cx:W", "cx:kg", "cx:m", "cx:s", "cx:uW" ], "quantity_kinds": [ "power" ], "kind_label": "Power", "dimension": [ 2, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "Mechanical", "Thermal" ], "definition_lines": [ "1 µW = 0.000001 W." ], "normalized_transform": { "reference_unit": "cx:W", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/microwatt", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:MJ", "slug": "megajoule", "name": "Megajoule", "symbol": "MJ", "code": "MJ", "aliases": [], "quantity_kind": "energy", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:J", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "energy.j", "usage_status": "current", "content_digest": "ab35c28bc366fb5a69dadd31a2c286616bd03ef25bef4aada6d2892cbc0b676c", "dependency_digest": "7d3e6f2b1fb797af20d881c09c846c55a5e0f79190cf42d7d2808ef17afb5b94", "dependency_ids": [ "cx:J", "cx:MJ", "cx:N", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "energy" ], "kind_label": "Energy", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Thermal", "Electrical" ], "definition_lines": [ "1 MJ = 1000000 J." ], "normalized_transform": { "reference_unit": "cx:J", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/megajoule", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:GJ", "slug": "gigajoule", "name": "Gigajoule", "symbol": "GJ", "code": "GJ", "aliases": [], "quantity_kind": "energy", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:J", "scale": { "numerator": "1000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "energy.j", "usage_status": "current", "content_digest": "62d0fd2c332331de41099a95026cb6d5188b7195fbb0dad6923d5c2270775af8", "dependency_digest": "9abcf2491dde98dcf0e536e54775432fb63af4de64e11e60cdc3c04152cd6dfd", "dependency_ids": [ "cx:GJ", "cx:J", "cx:N", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "energy" ], "kind_label": "Energy", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Thermal", "Electrical" ], "definition_lines": [ "1 GJ = 1000000000 J." ], "normalized_transform": { "reference_unit": "cx:J", "scale": { "numerator": "1000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gigajoule", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:MWh", "slug": "megawatt-hour", "name": "Megawatt hour", "symbol": "MWh", "code": "MWh", "aliases": [], "quantity_kind": "energy", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:J", "scale": { "numerator": "3600000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "energy.j", "usage_status": "current", "content_digest": "7dee9937b228b72c5274542bb9f544c76ed8977af05f9f94a478b496b56f490e", "dependency_digest": "de64582cff076ae42370495ca3f0c72a851c28a559d61bd4059b61eef22a806c", "dependency_ids": [ "cx:J", "cx:MWh", "cx:N", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "energy" ], "kind_label": "Energy", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Thermal", "Electrical" ], "definition_lines": [ "1 MWh = 3600000000 J." ], "normalized_transform": { "reference_unit": "cx:J", "scale": { "numerator": "3600000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/megawatt-hour", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:THz", "slug": "terahertz", "name": "Terahertz", "symbol": "THz", "code": "THz", "aliases": [], "quantity_kind": "frequency", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Hz", "scale": { "numerator": "1000000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "frequency.hz", "usage_status": "current", "content_digest": "ff967b3fd644a45051bf71a8c62461f35df82fd3a435c4e935ecb28b3a84341a", "dependency_digest": "69704709fde3633b94d2abac319b21482265bcb97b20bf00100551aa125cb30a", "dependency_ids": [ "cx:Hz", "cx:THz", "cx:s" ], "quantity_kinds": [ "frequency" ], "kind_label": "Frequency", "dimension": [ 0, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "General" ], "definition_lines": [ "1 THz = 1000000000000 Hz." ], "normalized_transform": { "reference_unit": "cx:Hz", "scale": { "numerator": "1000000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/terahertz", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:uV", "slug": "microvolt", "name": "Microvolt", "symbol": "µV", "code": "uV", "aliases": [ "μV", "uV" ], "quantity_kind": "electric_potential", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:V", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electric_potential.v", "usage_status": "current", "content_digest": "0d6e1c3527ac3eb51cb4aaf0351b677c9e3c07b0d818cd8cfd5bf08f3a36607c", "dependency_digest": "444c2671ba7b844a28cf76a9284380a66b352c2d4d882a45a502ab24bb37c0b9", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:s", "cx:uV" ], "quantity_kinds": [ "electric_potential" ], "kind_label": "Electric potential", "dimension": [ 2, 1, -3, -1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 µV = 0.000001 V." ], "normalized_transform": { "reference_unit": "cx:V", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/microvolt", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:nV", "slug": "nanovolt", "name": "Nanovolt", "symbol": "nV", "code": "nV", "aliases": [], "quantity_kind": "electric_potential", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:V", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electric_potential.v", "usage_status": "current", "content_digest": "fd909185399112af2abb8661ef9baa7bd15940da22db29286b5e458770fa131c", "dependency_digest": "ea5fb4483055efae4674b4371034a5b09c27d0293e82029269703a27d4c83e86", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:nV", "cx:s" ], "quantity_kinds": [ "electric_potential" ], "kind_label": "Electric potential", "dimension": [ 2, 1, -3, -1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 nV = 0.000000001 V." ], "normalized_transform": { "reference_unit": "cx:V", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/nanovolt", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:MV", "slug": "megavolt", "name": "Megavolt", "symbol": "MV", "code": "MV", "aliases": [], "quantity_kind": "electric_potential", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:V", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electric_potential.v", "usage_status": "current", "content_digest": "0c9cfe8a9b8ff8725bb2240c8cc66f5d3847ecd851c1ba00960f5f334300aeee", "dependency_digest": "d0eec0c79aa79c230a28afd10bd1145140a5d65b8f2afb0ddd802e47cdde66bc", "dependency_ids": [ "cx:A", "cx:J", "cx:MV", "cx:N", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "electric_potential" ], "kind_label": "Electric potential", "dimension": [ 2, 1, -3, -1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 MV = 1000000 V." ], "normalized_transform": { "reference_unit": "cx:V", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/megavolt", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:GV", "slug": "gigavolt", "name": "Gigavolt", "symbol": "GV", "code": "GV", "aliases": [], "quantity_kind": "electric_potential", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:V", "scale": { "numerator": "1000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electric_potential.v", "usage_status": "current", "content_digest": "7fc3a3749e4cc6c747aec49007fa658e8e7f9c224de4a7952446c71635263ae2", "dependency_digest": "fe32720408d47643344fd4dd6b932c479cf3d6278665dc2b00e5e7dd7eb3c63c", "dependency_ids": [ "cx:A", "cx:GV", "cx:J", "cx:N", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "electric_potential" ], "kind_label": "Electric potential", "dimension": [ 2, 1, -3, -1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 GV = 1000000000 V." ], "normalized_transform": { "reference_unit": "cx:V", "scale": { "numerator": "1000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gigavolt", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:mC", "slug": "millicoulomb", "name": "Millicoulomb", "symbol": "mC", "code": "mC", "aliases": [], "quantity_kind": "electric_charge", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:C", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electric_charge.c", "usage_status": "current", "content_digest": "a16c6bc1358e365888bd52d80e68ac2bbfdbef4ef6d371602b7487aadd093735", "dependency_digest": "cccb38f54dd2c2875ac5eb62b854e9aac10812aec98a402a212bcd524583a06e", "dependency_ids": [ "cx:A", "cx:C", "cx:mC", "cx:s" ], "quantity_kinds": [ "electric_charge" ], "kind_label": "Electric charge", "dimension": [ 0, 0, 1, 1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 mC = 0.001 C." ], "normalized_transform": { "reference_unit": "cx:C", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/millicoulomb", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:uC", "slug": "microcoulomb", "name": "Microcoulomb", "symbol": "µC", "code": "uC", "aliases": [ "μC", "uC" ], "quantity_kind": "electric_charge", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:C", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electric_charge.c", "usage_status": "current", "content_digest": "4ccf6a37b1db1831bb7b10ccd5957b335f9de565b9a4ec660324773a96a6cef8", "dependency_digest": "914ffc365ff4f35c9b83a52ffefae16253fd4535fc7c3a8dd5d379f771a15883", "dependency_ids": [ "cx:A", "cx:C", "cx:s", "cx:uC" ], "quantity_kinds": [ "electric_charge" ], "kind_label": "Electric charge", "dimension": [ 0, 0, 1, 1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 µC = 0.000001 C." ], "normalized_transform": { "reference_unit": "cx:C", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/microcoulomb", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:nC", "slug": "nanocoulomb", "name": "Nanocoulomb", "symbol": "nC", "code": "nC", "aliases": [], "quantity_kind": "electric_charge", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:C", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electric_charge.c", "usage_status": "current", "content_digest": "b010be6cf3b067ba5e77f8d1b83b4346a2a3664bf8eb2aec883edc1307237cf7", "dependency_digest": "78a7bb1aed91695ce979636170798ea6b949d0ee369744bbc03e8d526e5ddc54", "dependency_ids": [ "cx:A", "cx:C", "cx:nC", "cx:s" ], "quantity_kinds": [ "electric_charge" ], "kind_label": "Electric charge", "dimension": [ 0, 0, 1, 1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 nC = 0.000000001 C." ], "normalized_transform": { "reference_unit": "cx:C", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/nanocoulomb", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:pC", "slug": "picocoulomb", "name": "Picocoulomb", "symbol": "pC", "code": "pC", "aliases": [], "quantity_kind": "electric_charge", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:C", "scale": { "numerator": "1", "denominator": "1000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electric_charge.c", "usage_status": "current", "content_digest": "ef8bcc401d07e5a9dee8895eab2378d31d4268dc7f12fd7ab0e88b1ec379d9a7", "dependency_digest": "a1d273494a6b91e2524733260544870ab32b5a66c10e67d3b6dae63f2dc72d6f", "dependency_ids": [ "cx:A", "cx:C", "cx:pC", "cx:s" ], "quantity_kinds": [ "electric_charge" ], "kind_label": "Electric charge", "dimension": [ 0, 0, 1, 1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 pC = 0.000000000001 C." ], "normalized_transform": { "reference_unit": "cx:C", "scale": { "numerator": "1", "denominator": "1000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/picocoulomb", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:nA", "slug": "nanoampere", "name": "Nanoampere", "symbol": "nA", "code": "nA", "aliases": [], "quantity_kind": "electric_current", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:A", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electric_current.a", "usage_status": "current", "content_digest": "eedd7f68d4ac94ba9e69b03a9e4dd564cf55007a9330d8692685050c99794480", "dependency_digest": "00417cfc817e3d189ebb8cf65e1200971b4727b1791990d8c8d43203a5f3b1cc", "dependency_ids": [ "cx:A", "cx:nA" ], "quantity_kinds": [ "electric_current" ], "kind_label": "Electric current", "dimension": [ 0, 0, 0, 1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 nA = 0.000000001 A." ], "normalized_transform": { "reference_unit": "cx:A", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/nanoampere", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:pA", "slug": "picoampere", "name": "Picoampere", "symbol": "pA", "code": "pA", "aliases": [], "quantity_kind": "electric_current", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:A", "scale": { "numerator": "1", "denominator": "1000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electric_current.a", "usage_status": "current", "content_digest": "72b29d304d311d7bce7ae2aa7e2d4974f7d3ea9e06dd1bc70d7422749af926c3", "dependency_digest": "cdceca1c5143b5cfd0d7fb97c6908ba8b1140e8dd1d00c5f941ef62cff32050d", "dependency_ids": [ "cx:A", "cx:pA" ], "quantity_kinds": [ "electric_current" ], "kind_label": "Electric current", "dimension": [ 0, 0, 0, 1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 pA = 0.000000000001 A." ], "normalized_transform": { "reference_unit": "cx:A", "scale": { "numerator": "1", "denominator": "1000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/picoampere", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:kA", "slug": "kiloampere", "name": "Kiloampere", "symbol": "kA", "code": "kA", "aliases": [], "quantity_kind": "electric_current", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:A", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electric_current.a", "usage_status": "current", "content_digest": "85fc28ebc27f5c255c96e4e3fc17fee71dbb1aecd2e66b68861483e861877e62", "dependency_digest": "d111cda982f0a26e84ded1e5982086394bc5f5330b168a7ce5f9167e8969f272", "dependency_ids": [ "cx:A", "cx:kA" ], "quantity_kinds": [ "electric_current" ], "kind_label": "Electric current", "dimension": [ 0, 0, 0, 1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 kA = 1000 A." ], "normalized_transform": { "reference_unit": "cx:A", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kiloampere", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:uohm", "slug": "microohm", "name": "Microohm", "symbol": "µΩ", "code": "uohm", "aliases": [ "μΩ", "uΩ" ], "quantity_kind": "resistance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:ohm", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "resistance.ohm", "usage_status": "current", "content_digest": "eb73b8cb90949b062664d2792925e819e4862f345c3ab5e55e7895fc79e0fd4b", "dependency_digest": "9ec9e8cc02285a8a355b54c5417debb7dd18250e749374c664cef6673303d64b", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:ohm", "cx:s", "cx:uohm" ], "quantity_kinds": [ "resistance" ], "kind_label": "Electrical resistance", "dimension": [ 2, 1, -3, -2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 µΩ = 0.000001 Ω." ], "normalized_transform": { "reference_unit": "cx:ohm", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/microohm", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:Gohm", "slug": "gigaohm", "name": "Gigaohm", "symbol": "GΩ", "code": "Gohm", "aliases": [], "quantity_kind": "resistance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:ohm", "scale": { "numerator": "1000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "resistance.ohm", "usage_status": "current", "content_digest": "57f6c1864809e68a878139329dfef95cc7cf3c80133ebfc47252b16fdc51341f", "dependency_digest": "25daa19f2dd7c1d14269495a0fface19ce9118a4e78b4f61c482296b2e8dec13", "dependency_ids": [ "cx:A", "cx:Gohm", "cx:J", "cx:N", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:ohm", "cx:s" ], "quantity_kinds": [ "resistance" ], "kind_label": "Electrical resistance", "dimension": [ 2, 1, -3, -2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 GΩ = 1000000000 Ω." ], "normalized_transform": { "reference_unit": "cx:ohm", "scale": { "numerator": "1000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gigaohm", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:mF", "slug": "millifarad", "name": "Millifarad", "symbol": "mF", "code": "mF", "aliases": [], "quantity_kind": "capacitance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:F", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "capacitance.f", "usage_status": "current", "content_digest": "66e55e0a82a3a312415814d619ad8f16db04ac485f8203a19f76c74497439aa1", "dependency_digest": "c4c1191211b8227dac807b7d9eaae7e401adf3f8ae6b44e6418855bfd3e63dd1", "dependency_ids": [ "cx:A", "cx:C", "cx:F", "cx:J", "cx:N", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:mF", "cx:s" ], "quantity_kinds": [ "capacitance" ], "kind_label": "Capacitance", "dimension": [ -2, -1, 4, 2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 mF = 0.001 F." ], "normalized_transform": { "reference_unit": "cx:F", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/millifarad", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:fF", "slug": "femtofarad", "name": "Femtofarad", "symbol": "fF", "code": "fF", "aliases": [], "quantity_kind": "capacitance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:F", "scale": { "numerator": "1", "denominator": "1000000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "capacitance.f", "usage_status": "current", "content_digest": "367103c66842d54073450cb33f13f79e24857948222214cb70ea2169b14f3f17", "dependency_digest": "e1fa69a7cd454f35b6c84f261c603f90844c765ad34075fef3ac6ea2516ba87b", "dependency_ids": [ "cx:A", "cx:C", "cx:F", "cx:J", "cx:N", "cx:V", "cx:W", "cx:fF", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "capacitance" ], "kind_label": "Capacitance", "dimension": [ -2, -1, 4, 2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 fF = 0.000000000000001 F." ], "normalized_transform": { "reference_unit": "cx:F", "scale": { "numerator": "1", "denominator": "1000000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/femtofarad", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:nH", "slug": "nanohenry", "name": "Nanohenry", "symbol": "nH", "code": "nH", "aliases": [], "quantity_kind": "inductance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:H", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "inductance.h", "usage_status": "current", "content_digest": "43fea373910c1d790569208426d6287c21b8c021052fe0c95064fa5df5a17e7c", "dependency_digest": "18cf117777b13f3b39fa95e79022c70b7b314f8db3d725d672d8470d493d371e", "dependency_ids": [ "cx:A", "cx:H", "cx:J", "cx:N", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:nH", "cx:ohm", "cx:s" ], "quantity_kinds": [ "inductance" ], "kind_label": "Inductance", "dimension": [ 2, 1, -2, -2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 nH = 0.000000001 H." ], "normalized_transform": { "reference_unit": "cx:H", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/nanohenry", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:pH", "slug": "picohenry", "name": "Picohenry", "symbol": "pH", "code": "pH", "aliases": [], "quantity_kind": "inductance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:H", "scale": { "numerator": "1", "denominator": "1000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "inductance.h", "usage_status": "current", "content_digest": "d3024ee7af809753b308f925910b696592224799ed4b6fcb4f0f6f80c96067c3", "dependency_digest": "fd341e512eadf4f9badec72437f899ca7a380ea78bfeec49d52b8134178ba9c2", "dependency_ids": [ "cx:A", "cx:H", "cx:J", "cx:N", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:ohm", "cx:pH", "cx:s" ], "quantity_kinds": [ "inductance" ], "kind_label": "Inductance", "dimension": [ 2, 1, -2, -2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 pH = 0.000000000001 H." ], "normalized_transform": { "reference_unit": "cx:H", "scale": { "numerator": "1", "denominator": "1000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/picohenry", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:uT", "slug": "microtesla", "name": "Microtesla", "symbol": "µT", "code": "uT", "aliases": [ "μT", "uT" ], "quantity_kind": "magnetic_flux_density", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:T", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "magnetic_flux_density.t", "usage_status": "current", "content_digest": "c1b8da616e68ff613abcfcdd10dc7cd9798f9af371b075a79f2081e36b2b6764", "dependency_digest": "2e25c412912b733b0b15f448eb0e2ceb9038bc4ad80f8a44d821454ca897880b", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:T", "cx:V", "cx:W", "cx:Wb", "cx:kg", "cx:m", "cx:s", "cx:uT" ], "quantity_kinds": [ "magnetic_flux_density" ], "kind_label": "Magnetic flux density", "dimension": [ 0, 1, -2, -1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 µT = 0.000001 T." ], "normalized_transform": { "reference_unit": "cx:T", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/microtesla", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:nT", "slug": "nanotesla", "name": "Nanotesla", "symbol": "nT", "code": "nT", "aliases": [], "quantity_kind": "magnetic_flux_density", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:T", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "magnetic_flux_density.t", "usage_status": "current", "content_digest": "842d00838c200fe216197d07934c0286ebce737bff8b0b6a7d46c0815af093a1", "dependency_digest": "013731cc8d3787abfe040bba02564a151a7262ed5d2d4fd97ce80633394cf8f5", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:T", "cx:V", "cx:W", "cx:Wb", "cx:kg", "cx:m", "cx:nT", "cx:s" ], "quantity_kinds": [ "magnetic_flux_density" ], "kind_label": "Magnetic flux density", "dimension": [ 0, 1, -2, -1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 nT = 0.000000001 T." ], "normalized_transform": { "reference_unit": "cx:T", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/nanotesla", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:hPa", "slug": "hectopascal", "name": "Hectopascal", "symbol": "hPa", "code": "hPa", "aliases": [], "quantity_kind": "pressure", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Pa", "scale": { "numerator": "100", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "pressure.pa", "usage_status": "current", "content_digest": "3abc43356abc18e75fc4bbdebb514e5be48b301d85edf8d454373dba2b45a851", "dependency_digest": "bfbfd8849a63653f007f18956241997b3602b927f5603f608d8c10cac4fc91fd", "dependency_ids": [ "cx:N", "cx:Pa", "cx:hPa", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "pressure" ], "kind_label": "Pressure", "dimension": [ -1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Fluids" ], "definition_lines": [ "1 hPa = 100 Pa." ], "normalized_transform": { "reference_unit": "cx:Pa", "scale": { "numerator": "100", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/hectopascal", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:GPa", "slug": "gigapascal", "name": "Gigapascal", "symbol": "GPa", "code": "GPa", "aliases": [], "quantity_kind": "pressure", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Pa", "scale": { "numerator": "1000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "pressure.pa", "usage_status": "current", "content_digest": "6534d693dd8fd281f7561344e860c3480117d128168e51e1d852ad5858b1ca7c", "dependency_digest": "d59f63df6d091d5e306f6c7fe5cd5d4c3cd09923394475b0ea9e6a4bfcf353c9", "dependency_ids": [ "cx:GPa", "cx:N", "cx:Pa", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "pressure" ], "kind_label": "Pressure", "dimension": [ -1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Fluids" ], "definition_lines": [ "1 GPa = 1000000000 Pa." ], "normalized_transform": { "reference_unit": "cx:Pa", "scale": { "numerator": "1000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gigapascal", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:mN", "slug": "millinewton", "name": "Millinewton", "symbol": "mN", "code": "mN", "aliases": [], "quantity_kind": "force", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:N", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "force.n", "usage_status": "current", "content_digest": "2da2640a7341eb83aff7f2ad68af53b3569ed2df8461a85b8267c27e13bd0218", "dependency_digest": "a0dfbc543ee22ae3997ad060338ac760e94d04ff749d445d54727642bcb3eddc", "dependency_ids": [ "cx:N", "cx:kg", "cx:m", "cx:mN", "cx:s" ], "quantity_kinds": [ "force" ], "kind_label": "Force", "dimension": [ 1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 mN = 0.001 N." ], "normalized_transform": { "reference_unit": "cx:N", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/millinewton", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:MN", "slug": "meganewton", "name": "Meganewton", "symbol": "MN", "code": "MN", "aliases": [], "quantity_kind": "force", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:N", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "force.n", "usage_status": "current", "content_digest": "c403671916d93c3318c88085993da9e70668b45e23867a789b18e1beca2e157c", "dependency_digest": "399f73d5ef0b4480dfdf36fa277d9e6096a7af200899f2724506d03b51fb50f2", "dependency_ids": [ "cx:MN", "cx:N", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "force" ], "kind_label": "Force", "dimension": [ 1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 MN = 1000000 N." ], "normalized_transform": { "reference_unit": "cx:N", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/meganewton", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:umol", "slug": "micromole", "name": "Micromole", "symbol": "µmol", "code": "umol", "aliases": [ "μmol", "umol" ], "quantity_kind": "amount_of_substance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:mol", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "amount_of_substance.mol", "usage_status": "current", "content_digest": "6953e11132212aae6c520d43f898c601b1d0d956181eb8d703754df15e3ef7fc", "dependency_digest": "f73b3302d4a7b07ca760861da82d705bd62e6a49a65833b553b2968172ce303e", "dependency_ids": [ "cx:mol", "cx:umol" ], "quantity_kinds": [ "amount_of_substance" ], "kind_label": "Amount of substance", "dimension": [ 0, 0, 0, 0, 0, 1, 0 ], "roles": [ "scalar" ], "domains": [ "Chemistry" ], "definition_lines": [ "1 µmol = 0.000001 mol." ], "normalized_transform": { "reference_unit": "cx:mol", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/micromole", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:nmol", "slug": "nanomole", "name": "Nanomole", "symbol": "nmol", "code": "nmol", "aliases": [], "quantity_kind": "amount_of_substance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:mol", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "amount_of_substance.mol", "usage_status": "current", "content_digest": "0e579d7600554bd45c60e8192993dc4c36b6bc651af893c22815b184639b5f40", "dependency_digest": "87458cc3feb95bf15b8ed5089b79ce40002355f22065d00e1581974a396df4bc", "dependency_ids": [ "cx:mol", "cx:nmol" ], "quantity_kinds": [ "amount_of_substance" ], "kind_label": "Amount of substance", "dimension": [ 0, 0, 0, 0, 0, 1, 0 ], "roles": [ "scalar" ], "domains": [ "Chemistry" ], "definition_lines": [ "1 nmol = 0.000000001 mol." ], "normalized_transform": { "reference_unit": "cx:mol", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/nanomole", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:klm", "slug": "kilolumen", "name": "Kilolumen", "symbol": "klm", "code": "klm", "aliases": [], "quantity_kind": "luminous_flux", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:lm", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "luminous_flux.lm", "usage_status": "current", "content_digest": "a8336727f21ca2db427e7d74d558064f6347e21cabd261ecbf881d0c9fe9b5fb", "dependency_digest": "f41df6007c66d44989ab82b1214b005455adc2439ee56fc40310211fe5d5b9d0", "dependency_ids": [ "cx:cd", "cx:klm", "cx:lm", "cx:sr" ], "quantity_kinds": [ "luminous_flux" ], "kind_label": "Luminous flux", "dimension": [ 0, 0, 0, 0, 0, 0, 1 ], "roles": [ "scalar" ], "domains": [ "Optics" ], "definition_lines": [ "1 klm = 1000 lm." ], "normalized_transform": { "reference_unit": "cx:lm", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilolumen", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:klx", "slug": "kilolux", "name": "Kilolux", "symbol": "klx", "code": "klx", "aliases": [], "quantity_kind": "illuminance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:lx", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "illuminance.lx", "usage_status": "current", "content_digest": "a0ecc70f1590581bfb08a8c2d44d0d67b87808b1aba2e228803380d58af1e364", "dependency_digest": "36e5c86e709b29155591ee8e93dd379c85d280be8239723c11460ea7adde3b11", "dependency_ids": [ "cx:cd", "cx:klx", "cx:lm", "cx:lx", "cx:m", "cx:sr" ], "quantity_kinds": [ "illuminance" ], "kind_label": "Illuminance", "dimension": [ -2, 0, 0, 0, 0, 0, 1 ], "roles": [ "scalar" ], "domains": [ "Optics" ], "definition_lines": [ "1 klx = 1000 lx." ], "normalized_transform": { "reference_unit": "cx:lx", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilolux", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:nmi", "slug": "nautical-mile", "name": "Nautical mile", "symbol": "nmi", "code": "nmi", "aliases": [ "nautical mile", "nautical miles" ], "quantity_kind": "length", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m", "scale": { "numerator": "1852", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 8: international nautical mile = 1852 m; nmi is this registry display convention" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "other" ], "family_id": "length.m", "usage_status": "current", "content_digest": "bda336b329eec852246b4ab6b715ba0a0bf903d52de08b4093f0aa7e0e5cfcc0", "dependency_digest": "e192a85881ade97250aedf60365d6d43431af7206658195a25f4549619b718b0", "dependency_ids": [ "cx:m", "cx:nmi" ], "quantity_kinds": [ "length" ], "kind_label": "Length", "dimension": [ 1, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 nmi = 1852 m." ], "normalized_transform": { "reference_unit": "cx:m", "scale": { "numerator": "1852", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/nautical-mile", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 8: international nautical mile = 1852 m; nmi is this registry display convention" } ] }, { "unit_id": "cx:angstrom", "slug": "angstrom", "name": "Angstrom", "symbol": "Å", "code": "angstrom", "aliases": [ "angstrom", "ångström" ], "quantity_kind": "length", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m", "scale": { "numerator": "1", "denominator": "10000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 8: angstrom = 1e-10 m" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "other" ], "family_id": "length.m", "usage_status": "current", "content_digest": "c82f1a7cb2386c5f03d4e6d84c8b89ff6db5c7f8de8a269e1ee355ff5e4bf41d", "dependency_digest": "451e1a32ea769298c1849dee74170b75520510925270a9d9383cf601787be5b1", "dependency_ids": [ "cx:angstrom", "cx:m" ], "quantity_kinds": [ "length" ], "kind_label": "Length", "dimension": [ 1, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 Å = 0.0000000001 m." ], "normalized_transform": { "reference_unit": "cx:m", "scale": { "numerator": "1", "denominator": "10000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/angstrom", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 8: angstrom = 1e-10 m" } ] }, { "unit_id": "cx:au", "slug": "astronomical-unit", "name": "Astronomical unit", "symbol": "au", "code": "au", "aliases": [], "quantity_kind": "length", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m", "scale": { "numerator": "149597870700", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 8 and IAU 2012 Resolution B2: astronomical unit" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "length.m", "usage_status": "current", "content_digest": "d53c28bfeb8cbe49746b946bd5f016e460fb2dc1b50d449c9abc8585b1020a2e", "dependency_digest": "9bf09303a9424338d0d1e8a0606730458f4d50d682fa315390e68e5bdc6eff31", "dependency_ids": [ "cx:au", "cx:m" ], "quantity_kinds": [ "length" ], "kind_label": "Length", "dimension": [ 1, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 au = 149597870700 m." ], "normalized_transform": { "reference_unit": "cx:m", "scale": { "numerator": "149597870700", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/astronomical-unit", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 8 and IAU 2012 Resolution B2: astronomical unit" } ] }, { "unit_id": "cx:mil", "slug": "mil-length", "name": "Mil (length)", "symbol": "mil", "code": "mil", "aliases": [ "thou" ], "quantity_kind": "length", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m", "scale": { "numerator": "127", "denominator": "5000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Mil (length); exact relation distinguished from rounded tabular display" } ], "scope": "One thousandth of the international inch. This is a length, not an angular mil.", "legacy_tools": [], "systems": [ "international_yard_pound" ], "family_id": "length.m", "usage_status": "current", "content_digest": "e41614d06a723806cf46c31f70320a7707d248566e803b403458639158142277", "dependency_digest": "5abd35a5f9af3efc0b1a5addbb689c62d6eec081b7c8c1ad70a282000f1a390f", "dependency_ids": [ "cx:m", "cx:mil" ], "quantity_kinds": [ "length" ], "kind_label": "Length", "dimension": [ 1, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 mil = 0.0000254 m." ], "normalized_transform": { "reference_unit": "cx:m", "scale": { "numerator": "127", "denominator": "5000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/mil-length", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Mil (length); exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:oz_av", "slug": "ounce-avoirdupois", "name": "Ounce (avoirdupois)", "symbol": "oz", "code": "oz_av", "aliases": [ "oz" ], "quantity_kind": "mass", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg", "scale": { "numerator": "45359237", "denominator": "1600000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-hb44-2026", "locator": "Appendix C: avoirdupois mass, 16 ounces per pound" } ], "scope": "Named mass convention; do not infer avoirdupois/troy or short/long identity from the unqualified symbol.", "legacy_tools": [], "systems": [ "us_customary" ], "family_id": "mass.kg", "usage_status": "current", "content_digest": "224324a3dbd83694f42f9c9c792a7d91b23c0fd8712bca550048098bdf299b2b", "dependency_digest": "cec98a40d45d1bb561b63915850eee58e9fc64d8e68f242e4215f9d974059efa", "dependency_ids": [ "cx:kg", "cx:oz_av" ], "quantity_kinds": [ "mass" ], "kind_label": "Mass", "dimension": [ 0, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 oz = 0.028349523125 kg." ], "normalized_transform": { "reference_unit": "cx:kg", "scale": { "numerator": "45359237", "denominator": "1600000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/ounce-avoirdupois", "verification": "not_assessed", "sources": [ { "id": "source:nist-hb44-2026", "publisher": "NIST", "title": "Handbook 44 — Appendix C, General Tables of Units of Measurement", "url": "https://www.nist.gov/document/2026-nist-handbook-44-appendix-c", "edition": "2026 edition; Appendix C", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Appendix C: avoirdupois mass, 16 ounces per pound" } ] }, { "unit_id": "cx:st", "slug": "stone", "name": "Stone", "symbol": "st", "code": "st", "aliases": [ "st" ], "quantity_kind": "mass", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg", "scale": { "numerator": "317514659", "denominator": "50000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:uk-unit-definitions-1994", "locator": "Schedule: stone = 14 pounds" } ], "scope": "Named mass convention; do not infer avoirdupois/troy or short/long identity from the unqualified symbol.", "legacy_tools": [], "systems": [ "other" ], "family_id": "mass.kg", "usage_status": "current", "content_digest": "87309de409beba8088b5e91b248f70fc6a2787b7b86022db3a59b63c0115b0e3", "dependency_digest": "b141d1fa2daa9e83cb837490d55ee41f3e3c3111d594566f93142b2df2b54af7", "dependency_ids": [ "cx:kg", "cx:st" ], "quantity_kinds": [ "mass" ], "kind_label": "Mass", "dimension": [ 0, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 st = 6.35029318 kg." ], "normalized_transform": { "reference_unit": "cx:kg", "scale": { "numerator": "317514659", "denominator": "50000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/stone", "verification": "not_assessed", "sources": [ { "id": "source:uk-unit-definitions-1994", "publisher": "UK legislation", "title": "Weights and Measures Act 1985 — Schedule 1, unit definitions", "url": "https://www.legislation.gov.uk/ukpga/1985/72/schedule/1/2026-10-14", "edition": "Schedule 1, snapshot 2026-10-14; factual unit definitions only", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Schedule: stone = 14 pounds" } ] }, { "unit_id": "cx:grain", "slug": "grain", "name": "Grain", "symbol": "gr", "code": "grain", "aliases": [ "gr" ], "quantity_kind": "mass", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg", "scale": { "numerator": "6479891", "denominator": "100000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-hb44-2026", "locator": "Appendix C: 7000 grains per avoirdupois pound" } ], "scope": "Named mass convention; do not infer avoirdupois/troy or short/long identity from the unqualified symbol.", "legacy_tools": [], "systems": [ "us_customary" ], "family_id": "mass.kg", "usage_status": "current", "content_digest": "0b34e04f76ca1684fa70a01b93a86338a300daefd1e332e5cb3b73e355dd7e80", "dependency_digest": "693cb5e81453cabb7b664a542562cde7161422c435430d3a95ea4252aaa49661", "dependency_ids": [ "cx:grain", "cx:kg" ], "quantity_kinds": [ "mass" ], "kind_label": "Mass", "dimension": [ 0, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 gr = 0.00006479891 kg." ], "normalized_transform": { "reference_unit": "cx:kg", "scale": { "numerator": "6479891", "denominator": "100000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/grain", "verification": "not_assessed", "sources": [ { "id": "source:nist-hb44-2026", "publisher": "NIST", "title": "Handbook 44 — Appendix C, General Tables of Units of Measurement", "url": "https://www.nist.gov/document/2026-nist-handbook-44-appendix-c", "edition": "2026 edition; Appendix C", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Appendix C: 7000 grains per avoirdupois pound" } ] }, { "unit_id": "cx:oz_tr", "slug": "ounce-troy", "name": "Ounce (troy)", "symbol": "oz", "code": "oz_tr", "aliases": [ "oz" ], "quantity_kind": "mass", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg", "scale": { "numerator": "19439673", "denominator": "625000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-hb44-2026", "locator": "Appendix C: troy ounce = 480 grains" } ], "scope": "Named mass convention; do not infer avoirdupois/troy or short/long identity from the unqualified symbol.", "legacy_tools": [], "systems": [ "us_customary" ], "family_id": "mass.kg", "usage_status": "current", "content_digest": "9941e8549965299f55f3168443fcf3df4ccf22e6fba967d35409d1e8b7009789", "dependency_digest": "8a78be307897f423f4d6bdb72a13f7be28343f85cf89271d80aa2bde90045998", "dependency_ids": [ "cx:kg", "cx:oz_tr" ], "quantity_kinds": [ "mass" ], "kind_label": "Mass", "dimension": [ 0, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 oz = 0.0311034768 kg." ], "normalized_transform": { "reference_unit": "cx:kg", "scale": { "numerator": "19439673", "denominator": "625000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/ounce-troy", "verification": "not_assessed", "sources": [ { "id": "source:nist-hb44-2026", "publisher": "NIST", "title": "Handbook 44 — Appendix C, General Tables of Units of Measurement", "url": "https://www.nist.gov/document/2026-nist-handbook-44-appendix-c", "edition": "2026 edition; Appendix C", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Appendix C: troy ounce = 480 grains" } ] }, { "unit_id": "cx:ton_us", "slug": "short-ton", "name": "Short ton", "symbol": "ton", "code": "ton_us", "aliases": [ "ton" ], "quantity_kind": "mass", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg", "scale": { "numerator": "45359237", "denominator": "50000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-hb44-2026", "locator": "Appendix C: short ton = 2000 pounds" } ], "scope": "Named mass convention; do not infer avoirdupois/troy or short/long identity from the unqualified symbol.", "legacy_tools": [], "systems": [ "us_customary" ], "family_id": "mass.kg", "usage_status": "current", "content_digest": "cef5f6a1b34715fa9ccbb072dcef09fd99df94aac3839196a452fc37c904d54d", "dependency_digest": "448236bc4dfb35643171f13b3331307bae931b2e55edd03a2256823a780e4723", "dependency_ids": [ "cx:kg", "cx:ton_us" ], "quantity_kinds": [ "mass" ], "kind_label": "Mass", "dimension": [ 0, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 ton = 907.18474 kg." ], "normalized_transform": { "reference_unit": "cx:kg", "scale": { "numerator": "45359237", "denominator": "50000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/short-ton", "verification": "not_assessed", "sources": [ { "id": "source:nist-hb44-2026", "publisher": "NIST", "title": "Handbook 44 — Appendix C, General Tables of Units of Measurement", "url": "https://www.nist.gov/document/2026-nist-handbook-44-appendix-c", "edition": "2026 edition; Appendix C", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Appendix C: short ton = 2000 pounds" } ] }, { "unit_id": "cx:ton_uk", "slug": "long-ton", "name": "Long ton", "symbol": "ton", "code": "ton_uk", "aliases": [ "ton" ], "quantity_kind": "mass", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg", "scale": { "numerator": "317514659", "denominator": "312500" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:uk-unit-definitions-1994", "locator": "Schedule: long ton = 2240 pounds" } ], "scope": "Named mass convention; do not infer avoirdupois/troy or short/long identity from the unqualified symbol.", "legacy_tools": [], "systems": [ "other" ], "family_id": "mass.kg", "usage_status": "current", "content_digest": "c98f6636d1dd6b545d952c0dfd809eaf98da682da0aaf0c83bc22f5603a06fff", "dependency_digest": "75f5280e3209dbb2b4fc09dc4c1c92b2c7ee4a65cb1f8e968a8973f1c3476e5b", "dependency_ids": [ "cx:kg", "cx:ton_uk" ], "quantity_kinds": [ "mass" ], "kind_label": "Mass", "dimension": [ 0, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 ton = 1016.0469088 kg." ], "normalized_transform": { "reference_unit": "cx:kg", "scale": { "numerator": "317514659", "denominator": "312500" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/long-ton", "verification": "not_assessed", "sources": [ { "id": "source:uk-unit-definitions-1994", "publisher": "UK legislation", "title": "Weights and Measures Act 1985 — Schedule 1, unit definitions", "url": "https://www.legislation.gov.uk/ukpga/1985/72/schedule/1/2026-10-14", "edition": "Schedule 1, snapshot 2026-10-14; factual unit definitions only", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Schedule: long ton = 2240 pounds" } ] }, { "unit_id": "cx:week", "slug": "week-elapsed", "name": "Week (elapsed)", "symbol": "wk", "code": "week", "aliases": [ "week" ], "quantity_kind": "duration", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:s", "scale": { "numerator": "604800", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 8 day definition: exactly 7 elapsed days" } ], "scope": "Exactly seven elapsed 86400-second days; not a calendar/time-zone operation.", "legacy_tools": [], "systems": [ "other" ], "family_id": "duration.s", "usage_status": "current", "content_digest": "869f01fc5b66dc3f1f64c226d3b72cc00f2b2695ab48dc34aac5d498e37291e1", "dependency_digest": "19ac1c8870c5096a11167a5535b7fe459de7f5c29c884d37aa1ff0cdc181fa8f", "dependency_ids": [ "cx:s", "cx:week" ], "quantity_kinds": [ "duration" ], "kind_label": "Time interval", "dimension": [ 0, 0, 1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General" ], "definition_lines": [ "1 wk = 604800 s." ], "normalized_transform": { "reference_unit": "cx:s", "scale": { "numerator": "604800", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/week-elapsed", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 8 day definition: exactly 7 elapsed days" } ] }, { "unit_id": "cx:ft2_i", "slug": "square-international-foot", "name": "Square international foot", "symbol": "ft²", "code": "ft2_i", "aliases": [ "ft2" ], "quantity_kind": "area", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m2", "scale": { "numerator": "145161", "denominator": "1562500" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "international_yard_pound" ], "family_id": "area.m2", "usage_status": "current", "expression": { "cx:ft_i": 2 }, "content_digest": "ae6969db720703649de895edc35e00a722019dc5a54fa37677925789327fa26f", "dependency_digest": "8614d71ec3681e12bec3d9c1a730571afc2b623392069a34ef347001fd2d4836", "dependency_ids": [ "cx:ft2_i", "cx:ft_i", "cx:m", "cx:m2" ], "quantity_kinds": [ "area" ], "kind_label": "Area", "dimension": [ 2, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 ft² = (1 ft)^2." ], "normalized_transform": { "reference_unit": "cx:m2", "scale": { "numerator": "145161", "denominator": "1562500" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/square-international-foot", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:in2_i", "slug": "square-international-inch", "name": "Square international inch", "symbol": "in²", "code": "in2_i", "aliases": [ "in2" ], "quantity_kind": "area", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m2", "scale": { "numerator": "16129", "denominator": "25000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "international_yard_pound" ], "family_id": "area.m2", "usage_status": "current", "expression": { "cx:in_i": 2 }, "content_digest": "c49a33c650fc7731b028af812766fd9507fb33b153a2e7e99b906707223f893d", "dependency_digest": "305469f90999596ec51d4215f92c9563e4ce8f846bf64b13cfa1db1a7199be76", "dependency_ids": [ "cx:in2_i", "cx:in_i", "cx:m", "cx:m2" ], "quantity_kinds": [ "area" ], "kind_label": "Area", "dimension": [ 2, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "General", "Mechanical" ], "definition_lines": [ "1 in² = (1 in)^2." ], "normalized_transform": { "reference_unit": "cx:m2", "scale": { "numerator": "16129", "denominator": "25000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/square-international-inch", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:ft3_i", "slug": "cubic-international-foot", "name": "Cubic international foot", "symbol": "ft³", "code": "ft3_i", "aliases": [ "ft3" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3", "scale": { "numerator": "55306341", "denominator": "1953125000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "international_yard_pound" ], "family_id": "volume.m3", "usage_status": "current", "expression": { "cx:ft_i": 3 }, "applicable_quantity_kinds": [ "volume", "section_modulus" ], "content_digest": "4fb01b5be62a429493c261b4b6861438ff9caca840f9169e32c639c8ebd64ebc", "dependency_digest": "9750ed11a97c4123ccaec0ad170ecb219870c5affd5bf873d743cffc3ad533df", "dependency_ids": [ "cx:ft3_i", "cx:ft_i", "cx:m", "cx:m3" ], "quantity_kinds": [ "volume", "section_modulus" ], "kind_label": "Volume / Section modulus", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry", "Mechanical" ], "definition_lines": [ "1 ft³ = (1 ft)^3." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "55306341", "denominator": "1953125000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/cubic-international-foot", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:in3_i", "slug": "cubic-international-inch", "name": "Cubic international inch", "symbol": "in³", "code": "in3_i", "aliases": [ "in3" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3", "scale": { "numerator": "2048383", "denominator": "125000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "international_yard_pound" ], "family_id": "volume.m3", "usage_status": "current", "expression": { "cx:in_i": 3 }, "applicable_quantity_kinds": [ "volume", "section_modulus" ], "content_digest": "c8d81694d6be5113967df4b7ab4ecf98422fdc07dbcbe22a75b0322b05eeec36", "dependency_digest": "a77dcdc9970842493ca9fc016e79ca9a12cc91460c18556380e03c693e7471f3", "dependency_ids": [ "cx:in3_i", "cx:in_i", "cx:m", "cx:m3" ], "quantity_kinds": [ "volume", "section_modulus" ], "kind_label": "Volume / Section modulus", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry", "Mechanical" ], "definition_lines": [ "1 in³ = (1 in)^3." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "2048383", "denominator": "125000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/cubic-international-inch", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:yd3_i", "slug": "cubic-international-yard", "name": "Cubic international yard", "symbol": "yd³", "code": "yd3_i", "aliases": [ "yd3" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3", "scale": { "numerator": "1493271207", "denominator": "1953125000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "international_yard_pound" ], "family_id": "volume.m3", "usage_status": "current", "expression": { "cx:yd_i": 3 }, "applicable_quantity_kinds": [ "volume", "section_modulus" ], "content_digest": "e7fa137e8f728d41253d6f98593e43b948c75a96bb543d10dc8a0ffc782a2080", "dependency_digest": "6ea92665e84909df09e5ebfe085861a93d9689ff185772a5cd1da73fae1fb923", "dependency_ids": [ "cx:m", "cx:m3", "cx:yd3_i", "cx:yd_i" ], "quantity_kinds": [ "volume", "section_modulus" ], "kind_label": "Volume / Section modulus", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry", "Mechanical" ], "definition_lines": [ "1 yd³ = (1 yd)^3." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "1493271207", "denominator": "1953125000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/cubic-international-yard", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:gal_us", "slug": "gallon-us-liquid", "name": "Gallon (US liquid)", "symbol": "gal", "code": "gal_us", "aliases": [ "gal" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3", "scale": { "numerator": "473176473", "denominator": "125000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-hb44-2026", "locator": "Appendix C, liquid volume: gallon = 231 in³, 4 quarts, 8 pints, 128 fluid ounces" } ], "scope": "Liquid volume convention. US liquid and Imperial definitions are distinct; not mass ounces or dry measures.", "legacy_tools": [], "systems": [ "us_customary" ], "family_id": "volume.m3", "usage_status": "current", "content_digest": "7c730bc4b3a6af1df355a480b5f538233338ddf612e41f522bb1d919e52ab5f8", "dependency_digest": "67f60965b918d0eb375558f58f949e914c398b8d515cc8db94a2611558b9cae7", "dependency_ids": [ "cx:gal_us", "cx:m", "cx:m3" ], "quantity_kinds": [ "volume" ], "kind_label": "Volume", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry" ], "definition_lines": [ "1 gal = 0.003785411784 m³." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "473176473", "denominator": "125000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gallon-us-liquid", "verification": "not_assessed", "sources": [ { "id": "source:nist-hb44-2026", "publisher": "NIST", "title": "Handbook 44 — Appendix C, General Tables of Units of Measurement", "url": "https://www.nist.gov/document/2026-nist-handbook-44-appendix-c", "edition": "2026 edition; Appendix C", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Appendix C, liquid volume: gallon = 231 in³, 4 quarts, 8 pints, 128 fluid ounces" } ] }, { "unit_id": "cx:qt_us", "slug": "quart-us-liquid", "name": "Quart (US liquid)", "symbol": "qt", "code": "qt_us", "aliases": [ "qt" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3", "scale": { "numerator": "473176473", "denominator": "500000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-hb44-2026", "locator": "Appendix C, liquid volume: gallon = 231 in³, 4 quarts, 8 pints, 128 fluid ounces" } ], "scope": "Liquid volume convention. US liquid and Imperial definitions are distinct; not mass ounces or dry measures.", "legacy_tools": [], "systems": [ "us_customary" ], "family_id": "volume.m3", "usage_status": "current", "content_digest": "5acbf9f2c3776905f1587b1891c5a513175d72ec2b49aa420949ac2f9293de9c", "dependency_digest": "6182aefc761b01e96bec3dc90dd9dbf36fa1ead0ad6279fd44dfd189c5aa76aa", "dependency_ids": [ "cx:m", "cx:m3", "cx:qt_us" ], "quantity_kinds": [ "volume" ], "kind_label": "Volume", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry" ], "definition_lines": [ "1 qt = 0.000946352946 m³." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "473176473", "denominator": "500000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/quart-us-liquid", "verification": "not_assessed", "sources": [ { "id": "source:nist-hb44-2026", "publisher": "NIST", "title": "Handbook 44 — Appendix C, General Tables of Units of Measurement", "url": "https://www.nist.gov/document/2026-nist-handbook-44-appendix-c", "edition": "2026 edition; Appendix C", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Appendix C, liquid volume: gallon = 231 in³, 4 quarts, 8 pints, 128 fluid ounces" } ] }, { "unit_id": "cx:pt_us", "slug": "pint-us-liquid", "name": "Pint (US liquid)", "symbol": "pt", "code": "pt_us", "aliases": [ "pt" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3", "scale": { "numerator": "473176473", "denominator": "1000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-hb44-2026", "locator": "Appendix C, liquid volume: gallon = 231 in³, 4 quarts, 8 pints, 128 fluid ounces" } ], "scope": "Liquid volume convention. US liquid and Imperial definitions are distinct; not mass ounces or dry measures.", "legacy_tools": [], "systems": [ "us_customary" ], "family_id": "volume.m3", "usage_status": "current", "content_digest": "c80d83d32d5fdb76f458261f7eb118a23c1214711608623d78b2555f6b448c59", "dependency_digest": "f911e32ded25814653f61204ed2487d904f1b7ddf0bf93d41ced473b66ebab91", "dependency_ids": [ "cx:m", "cx:m3", "cx:pt_us" ], "quantity_kinds": [ "volume" ], "kind_label": "Volume", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry" ], "definition_lines": [ "1 pt = 0.000473176473 m³." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "473176473", "denominator": "1000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/pint-us-liquid", "verification": "not_assessed", "sources": [ { "id": "source:nist-hb44-2026", "publisher": "NIST", "title": "Handbook 44 — Appendix C, General Tables of Units of Measurement", "url": "https://www.nist.gov/document/2026-nist-handbook-44-appendix-c", "edition": "2026 edition; Appendix C", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Appendix C, liquid volume: gallon = 231 in³, 4 quarts, 8 pints, 128 fluid ounces" } ] }, { "unit_id": "cx:floz_us", "slug": "fluid-ounce-us-liquid", "name": "Fluid ounce (US liquid)", "symbol": "fl oz", "code": "floz_us", "aliases": [ "fl oz" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3", "scale": { "numerator": "473176473", "denominator": "16000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-hb44-2026", "locator": "Appendix C, liquid volume: gallon = 231 in³, 4 quarts, 8 pints, 128 fluid ounces" } ], "scope": "Liquid volume convention. US liquid and Imperial definitions are distinct; not mass ounces or dry measures.", "legacy_tools": [], "systems": [ "us_customary" ], "family_id": "volume.m3", "usage_status": "current", "content_digest": "c2e3e8cd52af13918b8ba172c8018ea17d433885b8e5f92c0fd72e1916bab69d", "dependency_digest": "6ae8da02e8bd7f4c4c4570a052d5ae413a673adb1c8e6719c33caed0c2ae8a77", "dependency_ids": [ "cx:floz_us", "cx:m", "cx:m3" ], "quantity_kinds": [ "volume" ], "kind_label": "Volume", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry" ], "definition_lines": [ "1 fl oz = 0.0000295735295625 m³." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "473176473", "denominator": "16000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/fluid-ounce-us-liquid", "verification": "not_assessed", "sources": [ { "id": "source:nist-hb44-2026", "publisher": "NIST", "title": "Handbook 44 — Appendix C, General Tables of Units of Measurement", "url": "https://www.nist.gov/document/2026-nist-handbook-44-appendix-c", "edition": "2026 edition; Appendix C", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Appendix C, liquid volume: gallon = 231 in³, 4 quarts, 8 pints, 128 fluid ounces" } ] }, { "unit_id": "cx:gal_imp", "slug": "gallon-imperial", "name": "Gallon (Imperial)", "symbol": "gal", "code": "gal_imp", "aliases": [ "gal" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3", "scale": { "numerator": "454609", "denominator": "100000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:uk-unit-definitions-1994", "locator": "Schedule: imperial gallon = 4.54609 dm³; quart = 1/4 gallon, pint = 1/8 gallon, fluid ounce = 1/160 gallon" } ], "scope": "Liquid volume convention. US liquid and Imperial definitions are distinct; not mass ounces or dry measures.", "legacy_tools": [], "systems": [ "other" ], "family_id": "volume.m3", "usage_status": "current", "content_digest": "470632a881c8518ec98cac318f61d756459ba5dafed22dafef721ccdeac92135", "dependency_digest": "8fbeaa0a1b939ae7354dc0819b5436a294cf1cc0b9f589bad09fdfda3b89e2e9", "dependency_ids": [ "cx:gal_imp", "cx:m", "cx:m3" ], "quantity_kinds": [ "volume" ], "kind_label": "Volume", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry" ], "definition_lines": [ "1 gal = 0.00454609 m³." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "454609", "denominator": "100000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gallon-imperial", "verification": "not_assessed", "sources": [ { "id": "source:uk-unit-definitions-1994", "publisher": "UK legislation", "title": "Weights and Measures Act 1985 — Schedule 1, unit definitions", "url": "https://www.legislation.gov.uk/ukpga/1985/72/schedule/1/2026-10-14", "edition": "Schedule 1, snapshot 2026-10-14; factual unit definitions only", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Schedule: imperial gallon = 4.54609 dm³; quart = 1/4 gallon, pint = 1/8 gallon, fluid ounce = 1/160 gallon" } ] }, { "unit_id": "cx:qt_imp", "slug": "quart-imperial", "name": "Quart (Imperial)", "symbol": "qt", "code": "qt_imp", "aliases": [ "qt" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3", "scale": { "numerator": "454609", "denominator": "400000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:uk-unit-definitions-1994", "locator": "Schedule: imperial gallon = 4.54609 dm³; quart = 1/4 gallon, pint = 1/8 gallon, fluid ounce = 1/160 gallon" } ], "scope": "Liquid volume convention. US liquid and Imperial definitions are distinct; not mass ounces or dry measures.", "legacy_tools": [], "systems": [ "other" ], "family_id": "volume.m3", "usage_status": "current", "content_digest": "5b12ae47863c7b0d1980212f8161f7199c06bd1d917f65c9a81080db6d8b6b72", "dependency_digest": "e62e47fee9ce411e952c35c2e42ab665810d7c54f006815a6709b029d0506a4b", "dependency_ids": [ "cx:m", "cx:m3", "cx:qt_imp" ], "quantity_kinds": [ "volume" ], "kind_label": "Volume", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry" ], "definition_lines": [ "1 qt = 0.0011365225 m³." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "454609", "denominator": "400000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/quart-imperial", "verification": "not_assessed", "sources": [ { "id": "source:uk-unit-definitions-1994", "publisher": "UK legislation", "title": "Weights and Measures Act 1985 — Schedule 1, unit definitions", "url": "https://www.legislation.gov.uk/ukpga/1985/72/schedule/1/2026-10-14", "edition": "Schedule 1, snapshot 2026-10-14; factual unit definitions only", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Schedule: imperial gallon = 4.54609 dm³; quart = 1/4 gallon, pint = 1/8 gallon, fluid ounce = 1/160 gallon" } ] }, { "unit_id": "cx:pt_imp", "slug": "pint-imperial", "name": "Pint (Imperial)", "symbol": "pt", "code": "pt_imp", "aliases": [ "pt" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3", "scale": { "numerator": "454609", "denominator": "800000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:uk-unit-definitions-1994", "locator": "Schedule: imperial gallon = 4.54609 dm³; quart = 1/4 gallon, pint = 1/8 gallon, fluid ounce = 1/160 gallon" } ], "scope": "Liquid volume convention. US liquid and Imperial definitions are distinct; not mass ounces or dry measures.", "legacy_tools": [], "systems": [ "other" ], "family_id": "volume.m3", "usage_status": "current", "content_digest": "5e068df7a1f74a256412588a94fb570f5f4a76c97820e49754fcd4aeffec8384", "dependency_digest": "80a7ef9be06cae3e33ed99a3792043769364d5071d9db7c68cd4203f9a014ff9", "dependency_ids": [ "cx:m", "cx:m3", "cx:pt_imp" ], "quantity_kinds": [ "volume" ], "kind_label": "Volume", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry" ], "definition_lines": [ "1 pt = 0.00056826125 m³." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "454609", "denominator": "800000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/pint-imperial", "verification": "not_assessed", "sources": [ { "id": "source:uk-unit-definitions-1994", "publisher": "UK legislation", "title": "Weights and Measures Act 1985 — Schedule 1, unit definitions", "url": "https://www.legislation.gov.uk/ukpga/1985/72/schedule/1/2026-10-14", "edition": "Schedule 1, snapshot 2026-10-14; factual unit definitions only", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Schedule: imperial gallon = 4.54609 dm³; quart = 1/4 gallon, pint = 1/8 gallon, fluid ounce = 1/160 gallon" } ] }, { "unit_id": "cx:floz_imp", "slug": "fluid-ounce-imperial", "name": "Fluid ounce (Imperial)", "symbol": "fl oz", "code": "floz_imp", "aliases": [ "fl oz" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3", "scale": { "numerator": "454609", "denominator": "16000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:uk-unit-definitions-1994", "locator": "Schedule: imperial gallon = 4.54609 dm³; quart = 1/4 gallon, pint = 1/8 gallon, fluid ounce = 1/160 gallon" } ], "scope": "Liquid volume convention. US liquid and Imperial definitions are distinct; not mass ounces or dry measures.", "legacy_tools": [], "systems": [ "other" ], "family_id": "volume.m3", "usage_status": "current", "content_digest": "16af80c8f51225be735708b46bba850fbe832cfddb4dff53fb3fe40c8c3b3bb8", "dependency_digest": "2ca285b77f6defb383443f2dec13d9949722ec8457fe816dbb467813a5e6ba48", "dependency_ids": [ "cx:floz_imp", "cx:m", "cx:m3" ], "quantity_kinds": [ "volume" ], "kind_label": "Volume", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry" ], "definition_lines": [ "1 fl oz = 0.0000284130625 m³." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "454609", "denominator": "16000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/fluid-ounce-imperial", "verification": "not_assessed", "sources": [ { "id": "source:uk-unit-definitions-1994", "publisher": "UK legislation", "title": "Weights and Measures Act 1985 — Schedule 1, unit definitions", "url": "https://www.legislation.gov.uk/ukpga/1985/72/schedule/1/2026-10-14", "edition": "Schedule 1, snapshot 2026-10-14; factual unit definitions only", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Schedule: imperial gallon = 4.54609 dm³; quart = 1/4 gallon, pint = 1/8 gallon, fluid ounce = 1/160 gallon" } ] }, { "unit_id": "cx:mph", "slug": "mile-per-hour", "name": "Mile per hour", "symbol": "mph", "code": "mph", "aliases": [], "quantity_kind": "speed", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m_s", "scale": { "numerator": "1397", "denominator": "3125" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. 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It is not local gravitational acceleration or a mass gram.", "legacy_tools": [], "systems": [ "other" ], "family_id": "acceleration.m_s2", "usage_status": "current", "content_digest": "ac69011fb81e1fd8c9a910cd5df2eeb8a5251b81edc5d4bc2973d1ab42e37a0e", "dependency_digest": "5896dd5473be50c0fa383295fd7911fac88e867fcf0fa6ea1659b1d010158d54", "dependency_ids": [ "cx:g0", "cx:m", "cx:m_s2", "cx:s" ], "quantity_kinds": [ "acceleration" ], "kind_label": "Acceleration", "dimension": [ 1, 0, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 g₀ = 9.80665 m/s²." ], "normalized_transform": { "reference_unit": "cx:m_s2", "scale": { "numerator": "196133", "denominator": "20000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/standard-gravity-unit", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Standard gravity unit; exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:Gal", "slug": "gal", "name": "Gal", "symbol": "Gal", "code": "Gal", "aliases": [], "quantity_kind": "acceleration", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m_s2", "scale": { "numerator": "1", "denominator": "100" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 8: Gal = 1 cm/s²" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "cgs" ], "family_id": "acceleration.m_s2", "usage_status": "current", "content_digest": "0225cc030a8776e21365044ba7dd2b5058607f36b52d98453fb3f23186918bc8", "dependency_digest": "e6f33a27d8edefbc390aa3256bf1beb80b509786d3ad0f238890d5e3ca2b1dbf", "dependency_ids": [ "cx:Gal", "cx:m", "cx:m_s2", "cx:s" ], "quantity_kinds": [ "acceleration" ], "kind_label": "Acceleration", "dimension": [ 1, 0, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 Gal = 0.01 m/s²." ], "normalized_transform": { "reference_unit": "cx:m_s2", "scale": { "numerator": "1", "denominator": "100" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gal", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 8: Gal = 1 cm/s²" } ] }, { "unit_id": "cx:lbf", "slug": "pound-force", "name": "Pound-force", "symbol": "lbf", "code": "lbf", "aliases": [], "quantity_kind": "force", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:N", "scale": { "numerator": "8896443230521", "denominator": "2000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Pound-force; exact relation distinguished from rounded tabular display" } ], "scope": "Conventional force unit. kgf and lbf use standard gravity; they are not mass units.", "legacy_tools": [], "systems": [ "other" ], "family_id": "force.n", "usage_status": "current", "content_digest": "a8400a339463c26a66da9c7e3cbca17146d98a056a4ac866b04e0cf91c2f5903", "dependency_digest": "15677106699713941dc49151c6a860668fefcfc70c89d1ec8e00ec4562b46ddb", "dependency_ids": [ "cx:N", "cx:kg", "cx:lbf", "cx:m", "cx:s" ], "quantity_kinds": [ "force" ], "kind_label": "Force", "dimension": [ 1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 lbf = 4.4482216152605 N." ], "normalized_transform": { "reference_unit": "cx:N", "scale": { "numerator": "8896443230521", "denominator": "2000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/pound-force", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Pound-force; exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:kgf", "slug": "kilogram-force", "name": "Kilogram-force", "symbol": "kgf", "code": "kgf", "aliases": [], "quantity_kind": "force", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:N", "scale": { "numerator": "196133", "denominator": "20000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Kilogram-force; exact relation distinguished from rounded tabular display" } ], "scope": "Conventional force unit. kgf and lbf use standard gravity; they are not mass units.", "legacy_tools": [], "systems": [ "other" ], "family_id": "force.n", "usage_status": "current", "content_digest": "ea8a0776b198753f53658c2387c0d0d3a8b083a7fca75352551d879d18e1e4d3", "dependency_digest": "6e7de86b630c7ec5531c3e5269b777408a9e229f380717b2f1adf75b13564dfc", "dependency_ids": [ "cx:N", "cx:kg", "cx:kgf", "cx:m", "cx:s" ], "quantity_kinds": [ "force" ], "kind_label": "Force", "dimension": [ 1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 kgf = 9.80665 N." ], "normalized_transform": { "reference_unit": "cx:N", "scale": { "numerator": "196133", "denominator": "20000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilogram-force", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Kilogram-force; exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:ozf", "slug": "ounce-force", "name": "Ounce-force", "symbol": "ozf", "code": "ozf", "aliases": [], "quantity_kind": "force", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:N", "scale": { "numerator": "8896443230521", "denominator": "32000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Ounce-force; exact relation distinguished from rounded tabular display" } ], "scope": "Conventional force unit. kgf and lbf use standard gravity; they are not mass units.", "legacy_tools": [], "systems": [ "other" ], "family_id": "force.n", "usage_status": "current", "content_digest": "571c3e3942cf8be65d6f4388bf080a1578d4d8e02073baa4a4c0488d1457a803", "dependency_digest": "88578f5079c3f0aeec78285874f885d5baf5b59a590265a4d0b74fdd14f56d3e", "dependency_ids": [ "cx:N", "cx:kg", "cx:m", "cx:ozf", "cx:s" ], "quantity_kinds": [ "force" ], "kind_label": "Force", "dimension": [ 1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 ozf = 0.27801385095378125 N." ], "normalized_transform": { "reference_unit": "cx:N", "scale": { "numerator": "8896443230521", "denominator": "32000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/ounce-force", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Ounce-force; exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:kip", "slug": "kip", "name": "Kip", "symbol": "kip", "code": "kip", "aliases": [], "quantity_kind": "force", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:N", "scale": { "numerator": "8896443230521", "denominator": "2000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Kip; exact relation distinguished from rounded tabular display" } ], "scope": "Conventional force unit. kgf and lbf use standard gravity; they are not mass units.", "legacy_tools": [], "systems": [ "other" ], "family_id": "force.n", "usage_status": "current", "content_digest": "31f6de0cdcfbe79e9b96488204e0ab3f40fbaac425bd9c781fb8af050305d8ee", "dependency_digest": "bc46df0cfc78322c5c8c9fd62c2460a42545b40307bc5f9cc521a3138dac292e", "dependency_ids": [ "cx:N", "cx:kg", "cx:kip", "cx:m", "cx:s" ], "quantity_kinds": [ "force" ], "kind_label": "Force", "dimension": [ 1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 kip = 4448.2216152605 N." ], "normalized_transform": { "reference_unit": "cx:N", "scale": { "numerator": "8896443230521", "denominator": "2000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kip", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Kip; exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:dyn", "slug": "dyne", "name": "Dyne", "symbol": "dyn", "code": "dyn", "aliases": [], "quantity_kind": "force", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:N", "scale": { "numerator": "1", "denominator": "100000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Dyne; exact relation distinguished from rounded tabular display" } ], "scope": "Conventional force unit. kgf and lbf use standard gravity; they are not mass units.", "legacy_tools": [], "systems": [ "cgs" ], "family_id": "force.n", "usage_status": "current", "content_digest": "257671fd248da6572804ec9f3e6d51ff840ac3adb5b5a74f8f1b86a23b12179d", "dependency_digest": "e9c452140d403a1fb0f949fa2dc95d598eb5fcdf61e9aa51351809c5e334a546", "dependency_ids": [ "cx:N", "cx:dyn", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "force" ], "kind_label": "Force", "dimension": [ 1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 dyn = 0.00001 N." ], "normalized_transform": { "reference_unit": "cx:N", "scale": { "numerator": "1", "denominator": "100000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/dyne", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Dyne; exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:psi", "slug": "pound-force-per-square-inch", "name": "Pound-force per square inch", "symbol": "psi", "code": "psi", "aliases": [], "quantity_kind": "pressure", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Pa", "scale": { "numerator": "8896443230521", "denominator": "1290320000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Pound-force per square inch; exact relation distinguished from rounded tabular display" } ], "scope": "Pressure scale only; absolute/gauge reference remains a separate model condition.", "legacy_tools": [], "systems": [ "other" ], "family_id": "pressure.pa", "usage_status": "current", "expression": { "cx:lbf": 1, "cx:in_i": -2 }, "content_digest": "f4e11151f2db9bff61bf7b5ff67021e071fc835e8b13cff9334f31196e5876af", "dependency_digest": "68c7412f1bdb0a07d42d30272e9adf5741616b9c71827ea57ce1eebec36554f0", "dependency_ids": [ "cx:N", "cx:Pa", "cx:in_i", "cx:kg", "cx:lbf", "cx:m", "cx:psi", "cx:s" ], "quantity_kinds": [ "pressure" ], "kind_label": "Pressure", "dimension": [ -1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Fluids" ], "definition_lines": [ "1 psi = (1 lbf)^1 × (1 in)^-2." ], "normalized_transform": { "reference_unit": "cx:Pa", "scale": { "numerator": "8896443230521", "denominator": "1290320000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/pound-force-per-square-inch", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Pound-force per square inch; exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:ksi", "slug": "kilopound-force-per-square-inch", "name": "Kilopound-force per square inch", "symbol": "ksi", "code": "ksi", "aliases": [], "quantity_kind": "pressure", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Pa", "scale": { "numerator": "8896443230521", "denominator": "1290320" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Kilopound-force per square inch; exact relation distinguished from rounded tabular display" } ], "scope": "Pressure scale only; absolute/gauge reference remains a separate model condition.", "legacy_tools": [], "systems": [ "other" ], "family_id": "pressure.pa", "usage_status": "current", "expression": { "cx:kip": 1, "cx:in_i": -2 }, "content_digest": "8e9054229c002eb46d748bad67694a38d2a4a859462d62a7ffdb109384cbf9fa", "dependency_digest": "f910906ce6f08a7a51357ffe4f2107393c00f48fda5b647de01f8c1f495b8093", "dependency_ids": [ "cx:N", "cx:Pa", "cx:in_i", "cx:kg", "cx:kip", "cx:ksi", "cx:m", "cx:s" ], "quantity_kinds": [ "pressure" ], "kind_label": "Pressure", "dimension": [ -1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Fluids" ], "definition_lines": [ "1 ksi = (1 kip)^1 × (1 in)^-2." ], "normalized_transform": { "reference_unit": "cx:Pa", "scale": { "numerator": "8896443230521", "denominator": "1290320" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilopound-force-per-square-inch", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Kilopound-force per square inch; exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:psf", "slug": "pound-force-per-square-foot", "name": "Pound-force per square foot", "symbol": "psf", "code": "psf", "aliases": [], "quantity_kind": "pressure", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Pa", "scale": { "numerator": "8896443230521", "denominator": "185806080000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Pound-force per square foot; exact relation distinguished from rounded tabular display" } ], "scope": "Pressure scale only; absolute/gauge reference remains a separate model condition.", "legacy_tools": [], "systems": [ "other" ], "family_id": "pressure.pa", "usage_status": "current", "expression": { "cx:lbf": 1, "cx:ft_i": -2 }, "content_digest": "25bd992b02408de04c995752029bd1db1abbabe23e16c113d37840d7245b18ca", "dependency_digest": "8ef41e3ddeaec98850356459b5cf1ae0467604571a59a8e408945d5000d64f8e", "dependency_ids": [ "cx:N", "cx:Pa", "cx:ft_i", "cx:kg", "cx:lbf", "cx:m", "cx:psf", "cx:s" ], "quantity_kinds": [ "pressure" ], "kind_label": "Pressure", "dimension": [ -1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Fluids" ], "definition_lines": [ "1 psf = (1 lbf)^1 × (1 ft)^-2." ], "normalized_transform": { "reference_unit": "cx:Pa", "scale": { "numerator": "8896443230521", "denominator": "185806080000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/pound-force-per-square-foot", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Pound-force per square foot; exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:mbar", "slug": "millibar", "name": "Millibar", "symbol": "mbar", "code": "mbar", "aliases": [], "quantity_kind": "pressure", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Pa", "scale": { "numerator": "100", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Millibar; exact relation distinguished from rounded tabular display" } ], "scope": "Pressure scale only; absolute/gauge reference remains a separate model condition.", "legacy_tools": [], "systems": [ "other" ], "family_id": "pressure.pa", "usage_status": "current", "content_digest": "db6a6a3b8a1bb22fb89995358bb79fbf2c1b17c68a55e20cd89d82253966eddc", "dependency_digest": "8cb789f74326357dd3d3c9691937428391165969631e4faf59cff7ac5d686c90", "dependency_ids": [ "cx:N", "cx:Pa", "cx:kg", "cx:m", "cx:mbar", "cx:s" ], "quantity_kinds": [ "pressure" ], "kind_label": "Pressure", "dimension": [ -1, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Fluids" ], "definition_lines": [ "1 mbar = 100 Pa." ], "normalized_transform": { "reference_unit": "cx:Pa", "scale": { "numerator": "100", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/millibar", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Millibar; exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:cal_th", "slug": "calorie-thermochemical", "name": "Calorie (thermochemical)", "symbol": "cal", "code": "cal_th", "aliases": [ "cal" ], "quantity_kind": "energy", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:J", "scale": { "numerator": "523", "denominator": "125" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Calorie (thermochemical); exact relation distinguished from rounded tabular display" } ], "scope": "Explicit calorie convention. Thermochemical and International Table calories differ; unqualified calorie requires a definition choice.", "legacy_tools": [], "systems": [ "other" ], "family_id": "energy.j", "usage_status": "current", "content_digest": "ece9dfd4d284354bea963178b2ae58856b1706b56ca4e7e844c52513019ca5c7", "dependency_digest": "d0086bb7b1e2c200015dffdba75c7882e12ab74b44ebe535fde1866df7e9ad42", "dependency_ids": [ "cx:J", "cx:N", "cx:cal_th", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "energy" ], "kind_label": "Energy", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Thermal", "Electrical" ], "definition_lines": [ "1 cal = 4.184 J." ], "normalized_transform": { "reference_unit": "cx:J", "scale": { "numerator": "523", "denominator": "125" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/calorie-thermochemical", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Calorie (thermochemical); exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:cal_IT", "slug": "calorie-international-table", "name": "Calorie (International Table)", "symbol": "cal", "code": "cal_IT", "aliases": [ "cal" ], "quantity_kind": "energy", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:J", "scale": { "numerator": "10467", "denominator": "2500" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Calorie (International Table); exact relation distinguished from rounded tabular display" } ], "scope": "Explicit calorie convention. Thermochemical and International Table calories differ; unqualified calorie requires a definition choice.", "legacy_tools": [], "systems": [ "other" ], "family_id": "energy.j", "usage_status": "current", "content_digest": "935aaaffcc509af9521905e5a6af37e0942d34b3c48223f9673cd7837de401f1", "dependency_digest": "2a214b4b9b7615106e52b2b117180098135ca961b79005cfb8a38a93f3cd0b8b", "dependency_ids": [ "cx:J", "cx:N", "cx:cal_IT", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "energy" ], "kind_label": "Energy", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Thermal", "Electrical" ], "definition_lines": [ "1 cal = 4.1868 J." ], "normalized_transform": { "reference_unit": "cx:J", "scale": { "numerator": "10467", "denominator": "2500" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/calorie-international-table", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Calorie (International Table); exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:kcal_th", "slug": "kilocalorie-thermochemical", "name": "Kilocalorie (thermochemical)", "symbol": "kcal", "code": "kcal_th", "aliases": [ "kcal" ], "quantity_kind": "energy", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:J", "scale": { "numerator": "4184", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Kilocalorie (thermochemical); exact relation distinguished from rounded tabular display" } ], "scope": "Explicit calorie convention. Thermochemical and International Table calories differ; unqualified calorie requires a definition choice.", "legacy_tools": [], "systems": [ "other" ], "family_id": "energy.j", "usage_status": "current", "content_digest": "afaa8f62c53626725e3dcc6de47e9f38d9344c6e365eb571ba8af46cea954fcd", "dependency_digest": "07bafaab6803e5396184988f56de6c77a34125b2dc3e98e6508f189871ddaaae", "dependency_ids": [ "cx:J", "cx:N", "cx:kcal_th", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "energy" ], "kind_label": "Energy", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Thermal", "Electrical" ], "definition_lines": [ "1 kcal = 4184 J." ], "normalized_transform": { "reference_unit": "cx:J", "scale": { "numerator": "4184", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilocalorie-thermochemical", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Kilocalorie (thermochemical); exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:kcal_IT", "slug": "kilocalorie-international-table", "name": "Kilocalorie (International Table)", "symbol": "kcal", "code": "kcal_IT", "aliases": [ "kcal" ], "quantity_kind": "energy", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:J", "scale": { "numerator": "20934", "denominator": "5" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Kilocalorie (International Table); exact relation distinguished from rounded tabular display" } ], "scope": "Explicit calorie convention. Thermochemical and International Table calories differ; unqualified calorie requires a definition choice.", "legacy_tools": [], "systems": [ "other" ], "family_id": "energy.j", "usage_status": "current", "content_digest": "823571ee1958cb867d5e779b76f01dc8f958f6bfa832fcf81ea64b5eaba349a5", "dependency_digest": "052a4563762669139abfd82306b24746ee33001d3b0c0e61b6feef225929cbf4", "dependency_ids": [ "cx:J", "cx:N", "cx:kcal_IT", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "energy" ], "kind_label": "Energy", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Thermal", "Electrical" ], "definition_lines": [ "1 kcal = 4186.8 J." ], "normalized_transform": { "reference_unit": "cx:J", "scale": { "numerator": "20934", "denominator": "5" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilocalorie-international-table", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Kilocalorie (International Table); exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:Btu_IT", "slug": "british-thermal-unit-international-table", "name": "British thermal unit (International Table)", "symbol": "BTU", "code": "Btu_IT", "aliases": [ "Btu", "BTU_IT" ], "quantity_kind": "energy", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:J", "scale": { "numerator": "52752792631", "denominator": "50000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nbs-heating-values-1982", "locator": "Appendix A3.2.2, PDF p.84: exact International Table Btu in joules" } ], "scope": "International Table convention only; generic BTU may refer to other thermal conventions.", "legacy_tools": [], "systems": [ "other" ], "family_id": "energy.j", "usage_status": "current", "content_digest": "d9eff49faea28d64911b1c5cf7f5bb49658c758830311a4c9f3b0fa89277fab4", "dependency_digest": "a1a310165f2bdaf06b3f15fd56410457592d48100c01b22f4d1621b6f5105a33", "dependency_ids": [ "cx:Btu_IT", "cx:J", "cx:N", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "energy" ], "kind_label": "Energy", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Thermal", "Electrical" ], "definition_lines": [ "1 BTU = 1055.05585262 J." ], "normalized_transform": { "reference_unit": "cx:J", "scale": { "numerator": "52752792631", "denominator": "50000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/british-thermal-unit-international-table", "verification": "not_assessed", "sources": [ { "id": "source:nbs-heating-values-1982", "publisher": "NBS (now NIST)", "title": "Heating Values of Natural Gas and Its Components", "url": "https://nvlpubs.nist.gov/nistpubs/Legacy/IR/nbsir81-2401.pdf", "edition": "NBSIR 82-2401, August 1982, Appendix A3.2.2", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Appendix A3.2.2, PDF p.84: exact International Table Btu in joules" } ] }, { "unit_id": "cx:eV", "slug": "electronvolt", "name": "Electronvolt", "symbol": "eV", "code": "eV", "aliases": [], "quantity_kind": "energy", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:J", "scale": { "numerator": "801088317", "denominator": "5000000000000000000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Table 8 and SI defining elementary charge: electronvolt; Table 7 prefixes" } ], "scope": "Definition metadata. 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Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "energy.j", "usage_status": "current", "content_digest": "5aa18ccaa1037997f47db475650e772da2500c7d533101c2d5f067450f6d55c4", "dependency_digest": "fc59797439be65f9f877a1546687b0af42308068f0f60369996c826bddcc26e0", "dependency_ids": [ "cx:GeV", "cx:J", "cx:N", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "energy" ], "kind_label": "Energy", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Thermal", "Electrical" ], "definition_lines": [ "1 GeV = 0.0000000001602176634 J." ], "normalized_transform": { "reference_unit": "cx:J", "scale": { "numerator": "801088317", "denominator": "5000000000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gigaelectronvolt", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Table 8 and SI defining elementary charge: electronvolt; Table 7 prefixes" } ] }, { "unit_id": "cx:elementary_charge", "slug": "elementary-charge-unit", "name": "Elementary charge unit", "symbol": "e", "code": "elementary_charge", "aliases": [ "elementary_charge", "elementary charge" ], "quantity_kind": "electric_charge", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:C", "scale": { "numerator": "801088317", "denominator": "5000000000000000000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "SI defining constant e: positive elementary-charge magnitude" } ], "scope": "Positive elementary-charge magnitude as a charge unit; not the signed charge of a particular particle.", "legacy_tools": [], "systems": [ "other" ], "family_id": "electric_charge.c", "usage_status": "current", "content_digest": "77fda7e2cb1c27dab875c38c7b8e670c0976503d7be453abf583be7304def065", "dependency_digest": "2bc5cadc56074f38ca02eac12ea1d5a76b6938b330e3203a490a6e8fe46690a7", "dependency_ids": [ "cx:A", "cx:C", "cx:elementary_charge", "cx:s" ], "quantity_kinds": [ "electric_charge" ], "kind_label": "Electric charge", "dimension": [ 0, 0, 1, 1, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 e = 0.0000000000000000001602176634 C." ], "normalized_transform": { "reference_unit": "cx:C", "scale": { "numerator": "801088317", "denominator": "5000000000000000000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/elementary-charge-unit", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "SI defining constant e: positive elementary-charge magnitude" } ] }, { "unit_id": "cx:hp_mech", "slug": "horsepower-mechanical", "name": "Horsepower (mechanical)", "symbol": "hp", "code": "hp_mech", "aliases": [ "mechanical horsepower" ], "quantity_kind": "power", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:W", "scale": { "numerator": "37284993579113511", "denominator": "50000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: mechanical horsepower = 550 ft·lbf/s; derived using exact international foot, pound and standard gravity" } ], "scope": "Mechanical horsepower convention. bhp describes a measurement location, not a separate exact unit; electrical, boiler and metric horsepower differ.", "legacy_tools": [], "systems": [ "other" ], "family_id": "power.w", "usage_status": "current", "content_digest": "cbbf70884e955709315a41438967ab6139d4d889fa8ab2f337f8a9d71a3f1dcf", "dependency_digest": "076f13c3d6ced3d7d09a7c1f158c515bbbfebf1eaaf761fb5206e08902f1dd1a", "dependency_ids": [ "cx:J", "cx:N", "cx:W", "cx:hp_mech", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "power" ], "kind_label": "Power", "dimension": [ 2, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "Mechanical", "Thermal" ], "definition_lines": [ "1 hp = 745.69987158227022 W." ], "normalized_transform": { "reference_unit": "cx:W", "scale": { "numerator": "37284993579113511", "denominator": "50000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/horsepower-mechanical", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: mechanical horsepower = 550 ft·lbf/s; derived using exact international foot, pound and standard gravity" } ] }, { "unit_id": "cx:Btu_IT_h", "slug": "british-thermal-unit-per-hour-it", "name": "British thermal unit per hour (IT)", "symbol": "BTU/h", "code": "Btu_IT_h", "aliases": [], "quantity_kind": "power", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:W", "scale": { "numerator": "52752792631", "denominator": "180000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: IT Btu per hour; refrigeration ton = 12000 Btu_IT/h" } ], "scope": "Explicit International Table Btu convention. No thermodynamic cooling-process model is implied.", "legacy_tools": [], "systems": [ "other" ], "family_id": "power.w", "usage_status": "current", "content_digest": "351a2a279decc631ca86b9709a5ef061437e853870466fe01ba017c148db6b0c", "dependency_digest": "61472c8eed61c6b61b0b3198a21351e926905378b04d5f385b5d18a555f32ef0", "dependency_ids": [ "cx:Btu_IT_h", "cx:J", "cx:N", "cx:W", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "power" ], "kind_label": "Power", "dimension": [ 2, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "Mechanical", "Thermal" ], "definition_lines": [ "1 BTU/h = 52752792631/180000000000 W." ], "normalized_transform": { "reference_unit": "cx:W", "scale": { "numerator": "52752792631", "denominator": "180000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/british-thermal-unit-per-hour-it", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: IT Btu per hour; refrigeration ton = 12000 Btu_IT/h" } ] }, { "unit_id": "cx:TR_IT", "slug": "ton-of-refrigeration-it", "name": "Ton of refrigeration (IT)", "symbol": "TR", "code": "TR_IT", "aliases": [], "quantity_kind": "power", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:W", "scale": { "numerator": "52752792631", "denominator": "15000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: IT Btu per hour; refrigeration ton = 12000 Btu_IT/h" } ], "scope": "Explicit International Table Btu convention. 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Absolute temperature offsets do not participate. 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Absolute temperature offsets do not participate. 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Absolute temperature offsets do not participate. 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Absolute temperature offsets do not participate. 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Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "electrical_conductance.s", "usage_status": "current", "expression": { "cx:ohm": -1 }, "content_digest": "9470ab3e7c77bf390b72c99f53a1cd1220b334d682102cda1216c8650d8478ae", "dependency_digest": "28f9f95b968a40b175aaff11c60ba3c6bf2988ebccc4a8738fc51ffc05b17d58", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:S", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:ohm", "cx:s" ], "quantity_kinds": [ "electrical_conductance" ], "kind_label": "Electrical conductance", "dimension": [ -2, -1, 3, 2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 S = (1 Ω)^-1." ], "normalized_transform": { "reference_unit": "cx:S", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/siemens", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:ohm_m", "slug": "ohm-metre", "name": "Ohm metre", "symbol": "Ω·m", "code": "ohm_m", "aliases": [ "Ω*m", "ohm m" ], "quantity_kind": "electrical_resistivity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:ohm_m", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "electrical_resistivity.ohm_m", "usage_status": "current", "expression": { "cx:ohm": 1, "cx:m": 1 }, "content_digest": "2b43d1dc932f124239577c17179dd087a1dbe950e21e3abbdf804ef566458dd1", "dependency_digest": "d6dd6a5e811f79e40b0bff3372c36349c2fe3e00a27fc10c04829b44d3bab670", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:ohm", "cx:ohm_m", "cx:s" ], "quantity_kinds": [ "electrical_resistivity" ], "kind_label": "Electrical resistivity", "dimension": [ 3, 1, -3, -2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 Ω·m = (1 Ω)^1 × (1 m)^1." ], "normalized_transform": { "reference_unit": "cx:ohm_m", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/ohm-metre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:S_m", "slug": "siemens-per-metre", "name": "Siemens per metre", "symbol": "S/m", "code": "S_m", "aliases": [], "quantity_kind": "electrical_conductivity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:S_m", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "electrical_conductivity.s_m", "usage_status": "current", "expression": { "cx:S": 1, "cx:m": -1 }, "content_digest": "471eb112c5fe99140cef07f23a4e527aeb808ac4d24aad6bfd18f9c579291dee", "dependency_digest": "ddebc1f1f85d0d9f343892b63c9b9a95b48cef3ae19bb1db509852a822b80853", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:S", "cx:S_m", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:ohm", "cx:s" ], "quantity_kinds": [ "electrical_conductivity" ], "kind_label": "Electrical conductivity", "dimension": [ -3, -1, 3, 2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "Chemistry" ], "definition_lines": [ "1 S/m = (1 S)^1 × (1 m)^-1." ], "normalized_transform": { "reference_unit": "cx:S_m", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/siemens-per-metre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:VA", "slug": "volt-ampere", "name": "Volt ampere", "symbol": "VA", "code": "VA", "aliases": [], "quantity_kind": "apparent_power", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:VA", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "apparent_power.va", "usage_status": "current", "expression": { "cx:V": 1, "cx:A": 1 }, "content_digest": "e2b56e0ba5b5079a8537694070825a3ba5fd380df641663283d5ba78650debaa", "dependency_digest": "f19586f782c42c493e985a099c5a328ad2f7ee38a4ae058bb8ae42ac144faec7", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:V", "cx:VA", "cx:W", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "apparent_power" ], "kind_label": "Apparent power", "dimension": [ 2, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 VA = (1 V)^1 × (1 A)^1." ], "normalized_transform": { "reference_unit": "cx:VA", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/volt-ampere", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:var", "slug": "var", "name": "Var", "symbol": "var", "code": "var", "aliases": [], "quantity_kind": "reactive_power", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:var", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "reactive_power.var", "usage_status": "current", "expression": { "cx:V": 1, "cx:A": 1 }, "content_digest": "f4c32be2234d6641bab1d822bf02bd8b4cdf63a331acbe93d4efa40820d9a07c", "dependency_digest": "c32a8f07b22a9c96f7846553ff555f52e2ce036dbdfaa05d9d2fc5d8df07fba6", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:s", "cx:var" ], "quantity_kinds": [ "reactive_power" ], "kind_label": "Reactive power", "dimension": [ 2, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 var = (1 V)^1 × (1 A)^1." ], "normalized_transform": { "reference_unit": "cx:var", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/var", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:m4", "slug": "metre-to-the-fourth-power", "name": "Metre to the fourth power", "symbol": "m⁴", "code": "m4", "aliases": [ "m4" ], "quantity_kind": "area_moment", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:m4", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "area_moment.m4", "usage_status": "current", "expression": { "cx:m": 4 }, "content_digest": "02491d35cf50f4f6b37adf18d6d2e5713e487208d519cc06ecbceb9649aea9d3", "dependency_digest": "063334ce0349cf590fa47ed611478e3610663bba3ac0d1d3e4da7844229d1410", "dependency_ids": [ "cx:m", "cx:m4" ], "quantity_kinds": [ "area_moment" ], "kind_label": "Second moment of area", "dimension": [ 4, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 m⁴ = (1 m)^4." ], "normalized_transform": { "reference_unit": "cx:m4", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/metre-to-the-fourth-power", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:kg_m_s", "slug": "kilogram-metre-per-second", "name": "Kilogram metre per second", "symbol": "kg·m/s", "code": "kg_m_s", "aliases": [ "kg*m/s" ], "quantity_kind": "momentum", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:kg_m_s", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "momentum.kg_m_s", "usage_status": "current", "expression": { "cx:kg": 1, "cx:m": 1, "cx:s": -1 }, "content_digest": "ad66682f058fc187e6cfd9f51dee9c9ef1489752b95a804d7702e9d65620f7ea", "dependency_digest": "8abe326a20973d5708f796e55023d5122d6d9bc616a7d6db91d0ecbfc7b7d326", "dependency_ids": [ "cx:kg", "cx:kg_m_s", "cx:m", "cx:s" ], "quantity_kinds": [ "momentum" ], "kind_label": "Momentum", "dimension": [ 1, 1, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical", "Physics" ], "definition_lines": [ "1 kg·m/s = (1 kg)^1 × (1 m)^1 × (1 s)^-1." ], "normalized_transform": { "reference_unit": "cx:kg_m_s", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilogram-metre-per-second", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:kg_m2", "slug": "kilogram-per-square-metre", "name": "Kilogram per square metre", "symbol": "kg/m²", "code": "kg_m2", "aliases": [ "kg/m2" ], "quantity_kind": "areal_mass_density", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:kg_m2", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "areal_mass_density.kg_m2", "usage_status": "current", "expression": { "cx:kg": 1, "cx:m2": -1 }, "content_digest": "044b132fed27a4bda0a18e1e88d42f08d10076b35b79d83f78bac46d28898c71", "dependency_digest": "192f9225bffa35e978824c1f9eb5fc1b9616bff20aa8016245b60e7f3ee1939c", "dependency_ids": [ "cx:kg", "cx:kg_m2", "cx:m", "cx:m2" ], "quantity_kinds": [ "areal_mass_density" ], "kind_label": "Areal mass density", "dimension": [ -2, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "Mechanical" ], "definition_lines": [ "1 kg/m² = (1 kg)^1 × (1 m²)^-1." ], "normalized_transform": { "reference_unit": "cx:kg_m2", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilogram-per-square-metre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:W_m2", "slug": "watt-per-square-metre", "name": "Watt per square metre", "symbol": "W/m²", "code": "W_m2", "aliases": [ "W/m2" ], "quantity_kind": "irradiance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:W_m2", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "irradiance.w_m2", "usage_status": "current", "expression": { "cx:W": 1, "cx:m2": -1 }, "content_digest": "0b6ce1b5af7fb509637bcbef1492c526409dfff7e4e24d609b7bac95f1f6f09c", "dependency_digest": "24c3dc8880c186f4e3c7a141cc86e60867e3c96eec45cb260177aa08a41d9122", "dependency_ids": [ "cx:J", "cx:N", "cx:W", "cx:W_m2", "cx:kg", "cx:m", "cx:m2", "cx:s" ], "quantity_kinds": [ "irradiance" ], "kind_label": "Irradiance", "dimension": [ 0, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Optics", "Thermal" ], "definition_lines": [ "1 W/m² = (1 W)^1 × (1 m²)^-1." ], "normalized_transform": { "reference_unit": "cx:W_m2", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/watt-per-square-metre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:cd_m2", "slug": "candela-per-square-metre", "name": "Candela per square metre", "symbol": "cd/m²", "code": "cd_m2", "aliases": [ "cd/m2" ], "quantity_kind": "luminance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:cd_m2", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "luminance.cd_m2", "usage_status": "current", "expression": { "cx:cd": 1, "cx:m2": -1 }, "content_digest": "ecdf60d3aef06a1cd8978a2e29b2fbdb5f3b021d40438a08a84ec20808b6cb80", "dependency_digest": "356f2ef2e45aeba5ddb0489a129737620140132122fdff7f053d601fcce347c8", "dependency_ids": [ "cx:cd", "cx:cd_m2", "cx:m", "cx:m2" ], "quantity_kinds": [ "luminance" ], "kind_label": "Luminance", "dimension": [ -2, 0, 0, 0, 0, 0, 1 ], "roles": [ "scalar" ], "domains": [ "Optics" ], "definition_lines": [ "1 cd/m² = (1 cd)^1 × (1 m²)^-1." ], "normalized_transform": { "reference_unit": "cx:cd_m2", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/candela-per-square-metre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:Bq", "slug": "becquerel", "name": "Becquerel", "symbol": "Bq", "code": "Bq", "aliases": [], "quantity_kind": "radioactivity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:Bq", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "radioactivity.bq", "usage_status": "current", "expression": { "cx:s": -1 }, "content_digest": "3b4c192cecf32237596eb45cedc303a2f25439782f023f9df1292a99e2f625dd", "dependency_digest": "8e975313e8a18fdcfe5d22c2662c91e8b041332e0105acb1e3dfaf9fa4a1260c", "dependency_ids": [ "cx:Bq", "cx:s" ], "quantity_kinds": [ "radioactivity" ], "kind_label": "Activity", "dimension": [ 0, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Physics" ], "definition_lines": [ "1 Bq = (1 s)^-1." ], "normalized_transform": { "reference_unit": "cx:Bq", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/becquerel", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:Gy", "slug": "gray", "name": "Gray", "symbol": "Gy", "code": "Gy", "aliases": [], "quantity_kind": "absorbed_dose", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:Gy", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "absorbed_dose.gy", "usage_status": "current", "expression": { "cx:J": 1, "cx:kg": -1 }, "content_digest": "2ae25e2e5a84fd16259bd562c175763de0c234031cd43283bca6f7bfabfa2403", "dependency_digest": "dc781e916a691f57c719fb56ae84e6f9758222c486aacf29ceffb47cce83a7af", "dependency_ids": [ "cx:Gy", "cx:J", "cx:N", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "absorbed_dose" ], "kind_label": "Absorbed dose", "dimension": [ 2, 0, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Physics" ], "definition_lines": [ "1 Gy = (1 J)^1 × (1 kg)^-1." ], "normalized_transform": { "reference_unit": "cx:Gy", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gray", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:Sv", "slug": "sievert", "name": "Sievert", "symbol": "Sv", "code": "Sv", "aliases": [], "quantity_kind": "dose_equivalent", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:Sv", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "dose_equivalent.sv", "usage_status": "current", "expression": { "cx:J": 1, "cx:kg": -1 }, "content_digest": "c32d1586905ace3d60549ad401d1d76d42bc712c8b15fdc538d64ca903bd165e", "dependency_digest": "c6e450cb4b9521336f4eadb0b8eee654ea745c740aed96a41525b6d0f9df1c20", "dependency_ids": [ "cx:J", "cx:N", "cx:Sv", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "dose_equivalent" ], "kind_label": "Dose equivalent", "dimension": [ 2, 0, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Physics" ], "definition_lines": [ "1 Sv = (1 J)^1 × (1 kg)^-1." ], "normalized_transform": { "reference_unit": "cx:Sv", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/sievert", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:kat", "slug": "katal", "name": "Katal", "symbol": "kat", "code": "kat", "aliases": [], "quantity_kind": "catalytic_activity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:kat", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "catalytic_activity.kat", "usage_status": "current", "expression": { "cx:mol": 1, "cx:s": -1 }, "content_digest": "c2f505338971295212e59d88dc71885cf95928e67ee0d647b7f4c470a0b52985", "dependency_digest": "6cf3929f986e6819ddacd51df3379a7a985bcd3e7713c38ddfc317c9187a8edf", "dependency_ids": [ "cx:kat", "cx:mol", "cx:s" ], "quantity_kinds": [ "catalytic_activity" ], "kind_label": "Catalytic activity", "dimension": [ 0, 0, -1, 0, 0, 1, 0 ], "roles": [ "scalar" ], "domains": [ "Chemistry" ], "definition_lines": [ "1 kat = (1 mol)^1 × (1 s)^-1." ], "normalized_transform": { "reference_unit": "cx:kat", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/katal", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:L_s", "slug": "litre-per-second", "name": "Litre per second", "symbol": "L/s", "code": "L_s", "aliases": [], "quantity_kind": "volume_flow_rate", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3_s", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "volume_flow_rate.m3_s", "usage_status": "current", "expression": { "cx:L": 1, "cx:s": -1 }, "content_digest": "f123128aa94a28e70815c8712de3e00ba064a6e302f73050d531196beffb929d", "dependency_digest": "296277455c72def96d9c63bf58c9ab28fb0937746c55b911ac618be662e59275", "dependency_ids": [ "cx:L", "cx:L_s", "cx:m", "cx:m3", "cx:m3_s", "cx:s" ], "quantity_kinds": [ "volume_flow_rate" ], "kind_label": "Volume flow rate", "dimension": [ 3, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid", "Mechanical" ], "definition_lines": [ "1 L/s = (1 L)^1 × (1 s)^-1." ], "normalized_transform": { "reference_unit": "cx:m3_s", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/litre-per-second", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:L_min", "slug": "litre-per-minute", "name": "Litre per minute", "symbol": "L/min", "code": "L_min", "aliases": [], "quantity_kind": "volume_flow_rate", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3_s", "scale": { "numerator": "1", "denominator": "60000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "volume_flow_rate.m3_s", "usage_status": "current", "expression": { "cx:L": 1, "cx:min": -1 }, "content_digest": "dce1bbc1e72afb87a29083cad738d2597781256602ba1d93b055b36f399d6f6a", "dependency_digest": "dbcc7a82dfd9cb5bf1f92c41a4fd06541b8d7bcbddd2e75d8ab388457ce3e67d", "dependency_ids": [ "cx:L", "cx:L_min", "cx:m", "cx:m3", "cx:m3_s", "cx:min", "cx:s" ], "quantity_kinds": [ "volume_flow_rate" ], "kind_label": "Volume flow rate", "dimension": [ 3, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid", "Mechanical" ], "definition_lines": [ "1 L/min = (1 L)^1 × (1 min)^-1." ], "normalized_transform": { "reference_unit": "cx:m3_s", "scale": { "numerator": "1", "denominator": "60000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/litre-per-minute", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:mL_min", "slug": "millilitre-per-minute", "name": "Millilitre per minute", "symbol": "mL/min", "code": "mL_min", "aliases": [], "quantity_kind": "volume_flow_rate", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3_s", "scale": { "numerator": "1", "denominator": "60000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "volume_flow_rate.m3_s", "usage_status": "current", "expression": { "cx:mL": 1, "cx:min": -1 }, "content_digest": "de25e1588de51edc283f4058f0a30803207b34eaba2db9ba59804a2be17611c7", "dependency_digest": "a89c225ca7889124b671ac80c1be8566fe919aa33096fa04a90896d8a016bc05", "dependency_ids": [ "cx:L", "cx:m", "cx:m3", "cx:m3_s", "cx:mL", "cx:mL_min", "cx:min", "cx:s" ], "quantity_kinds": [ "volume_flow_rate" ], "kind_label": "Volume flow rate", "dimension": [ 3, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid", "Mechanical" ], "definition_lines": [ "1 mL/min = (1 mL)^1 × (1 min)^-1." ], "normalized_transform": { "reference_unit": "cx:m3_s", "scale": { "numerator": "1", "denominator": "60000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/millilitre-per-minute", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:m3_h", "slug": "cubic-metre-per-hour", "name": "Cubic metre per hour", "symbol": "m³/h", "code": "m3_h", "aliases": [ "m3/h" ], "quantity_kind": "volume_flow_rate", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3_s", "scale": { "numerator": "1", "denominator": "3600" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "volume_flow_rate.m3_s", "usage_status": "current", "expression": { "cx:m3": 1, "cx:h": -1 }, "content_digest": "438cf3cd797e705c28a6ef8dfa56060cf53c8c416dc0dbfaa5386b8f22106fc8", "dependency_digest": "e88c332110b8a683a98f5a2ae25d1eb07e9a5dae77aaf1747f8668536dbb7078", "dependency_ids": [ "cx:h", "cx:m", "cx:m3", "cx:m3_h", "cx:m3_s", "cx:s" ], "quantity_kinds": [ "volume_flow_rate" ], "kind_label": "Volume flow rate", "dimension": [ 3, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid", "Mechanical" ], "definition_lines": [ "1 m³/h = (1 m³)^1 × (1 h)^-1." ], "normalized_transform": { "reference_unit": "cx:m3_s", "scale": { "numerator": "1", "denominator": "3600" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/cubic-metre-per-hour", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:gpm_us", "slug": "gallon-per-minute-us-liquid", "name": "Gallon per minute (US liquid)", "symbol": "gpm", "code": "gpm_us", "aliases": [], "quantity_kind": "volume_flow_rate", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3_s", "scale": { "numerator": "157725491", "denominator": "2500000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "us_customary" ], "family_id": "volume_flow_rate.m3_s", "usage_status": "current", "expression": { "cx:gal_us": 1, "cx:min": -1 }, "content_digest": "2726ab0ce5ad395789b6217aa999145d0ce5fd12ed7c74102347b02f1da73dc8", "dependency_digest": "e8756251c2e5a94ab70bc520e1780b35f6bdcc4116c0c41bbbf0e09128f038be", "dependency_ids": [ "cx:gal_us", "cx:gpm_us", "cx:m", "cx:m3", "cx:m3_s", "cx:min", "cx:s" ], "quantity_kinds": [ "volume_flow_rate" ], "kind_label": "Volume flow rate", "dimension": [ 3, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid", "Mechanical" ], "definition_lines": [ "1 gpm = (1 gal)^1 × (1 min)^-1." ], "normalized_transform": { "reference_unit": "cx:m3_s", "scale": { "numerator": "157725491", "denominator": "2500000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gallon-per-minute-us-liquid", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:cfm", "slug": "cubic-foot-per-minute", "name": "Cubic foot per minute", "symbol": "cfm", "code": "cfm", "aliases": [], "quantity_kind": "volume_flow_rate", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3_s", "scale": { "numerator": "18435447", "denominator": "39062500000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "international_yard_pound" ], "family_id": "volume_flow_rate.m3_s", "usage_status": "current", "expression": { "cx:ft3_i": 1, "cx:min": -1 }, "content_digest": "a889a96a8669756857d7ea9623b27804a53f2bf77be9370d3c5f92becbcbc0e0", "dependency_digest": "66bae5851836ba9426e4d2a99d737e595d17637b3a25b0d3352e9b9cb629cb21", "dependency_ids": [ "cx:cfm", "cx:ft3_i", "cx:ft_i", "cx:m", "cx:m3", "cx:m3_s", "cx:min", "cx:s" ], "quantity_kinds": [ "volume_flow_rate" ], "kind_label": "Volume flow rate", "dimension": [ 3, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid", "Mechanical" ], "definition_lines": [ "1 cfm = (1 ft³)^1 × (1 min)^-1." ], "normalized_transform": { "reference_unit": "cx:m3_s", "scale": { "numerator": "18435447", "denominator": "39062500000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/cubic-foot-per-minute", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:kg_h", "slug": "kilogram-per-hour", "name": "Kilogram per hour", "symbol": "kg/h", "code": "kg_h", "aliases": [], "quantity_kind": "mass_flow_rate", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg_s", "scale": { "numerator": "1", "denominator": "3600" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "mass_flow_rate.kg_s", "usage_status": "current", "expression": { "cx:kg": 1, "cx:h": -1 }, "content_digest": "bb14624871ac270c4c0cfb49b1e5ae9db90546dd7fea3d205b529668a6a8a2d8", "dependency_digest": "908da55c37163143e414c5d985915ff740ea1e273c07d8e1470a560c9ae63494", "dependency_ids": [ "cx:h", "cx:kg", "cx:kg_h", "cx:kg_s", "cx:s" ], "quantity_kinds": [ "mass_flow_rate" ], "kind_label": "Mass flow rate", "dimension": [ 0, 1, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid", "Thermal" ], "definition_lines": [ "1 kg/h = (1 kg)^1 × (1 h)^-1." ], "normalized_transform": { "reference_unit": "cx:kg_s", "scale": { "numerator": "1", "denominator": "3600" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilogram-per-hour", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:g_s", "slug": "gram-per-second", "name": "Gram per second", "symbol": "g/s", "code": "g_s", "aliases": [], "quantity_kind": "mass_flow_rate", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg_s", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "mass_flow_rate.kg_s", "usage_status": "current", "expression": { "cx:g": 1, "cx:s": -1 }, "content_digest": "e412378b60070d9a4e718dae034be71b5060e16fc687997a867a92517e159dbb", "dependency_digest": "9b385c64e1385455d6803fe059356fb7a1cff1610b34ed7a33645190467feb45", "dependency_ids": [ "cx:g", "cx:g_s", "cx:kg", "cx:kg_s", "cx:s" ], "quantity_kinds": [ "mass_flow_rate" ], "kind_label": "Mass flow rate", "dimension": [ 0, 1, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid", "Thermal" ], "definition_lines": [ "1 g/s = (1 g)^1 × (1 s)^-1." ], "normalized_transform": { "reference_unit": "cx:kg_s", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gram-per-second", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:g_cm3", "slug": "gram-per-cubic-centimetre", "name": "Gram per cubic centimetre", "symbol": "g/cm³", "code": "g_cm3", "aliases": [ "g/cm3" ], "quantity_kind": "mass_density", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg_m3", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "mass_density.kg_m3", "usage_status": "current", "expression": { "cx:g": 1, "cx:cm3": -1 }, "applicable_quantity_kinds": [ "mass_density", "mass_concentration" ], "content_digest": "d976ae9a5382ba4c7884ebcd275be66fa49e0b95000759565ad2b6117347a080", "dependency_digest": "c1ae61b3eca0c42525eaba4adcbc9b8c1ce4fd385ae91469c27790a539a9f9e5", "dependency_ids": [ "cx:cm", "cx:cm3", "cx:g", "cx:g_cm3", "cx:kg", "cx:kg_m3", "cx:m", "cx:m3" ], "quantity_kinds": [ "mass_density", "mass_concentration" ], "kind_label": "Mass density / Mass concentration", "dimension": [ -3, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid", "Mechanical", "Chemistry" ], "definition_lines": [ "1 g/cm³ = (1 g)^1 × (1 cm³)^-1." ], "normalized_transform": { "reference_unit": "cx:kg_m3", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gram-per-cubic-centimetre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:lb_ft3", "slug": "pound-per-cubic-foot", "name": "Pound per cubic foot", "symbol": "lb/ft³", "code": "lb_ft3", "aliases": [ "lb/ft3" ], "quantity_kind": "mass_density", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg_m3", "scale": { "numerator": "28349523125", "denominator": "1769802912" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "us_customary" ], "family_id": "mass_density.kg_m3", "usage_status": "current", "expression": { "cx:lb_av": 1, "cx:ft3_i": -1 }, "applicable_quantity_kinds": [ "mass_density", "mass_concentration" ], "content_digest": "7840082f8f7c5ac5b47e670bcf44e8688b324078ec3f6c2ee9becc50dd2e396f", "dependency_digest": "2023a37ab17877699b55c6e4b5a3e9d9380a9889dd85d79c8fd96873adb22e27", "dependency_ids": [ "cx:ft3_i", "cx:ft_i", "cx:kg", "cx:kg_m3", "cx:lb_av", "cx:lb_ft3", "cx:m", "cx:m3" ], "quantity_kinds": [ "mass_density", "mass_concentration" ], "kind_label": "Mass density / Mass concentration", "dimension": [ -3, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid", "Mechanical", "Chemistry" ], "definition_lines": [ "1 lb/ft³ = (1 lb)^1 × (1 ft³)^-1." ], "normalized_transform": { "reference_unit": "cx:kg_m3", "scale": { "numerator": "28349523125", "denominator": "1769802912" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/pound-per-cubic-foot", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:g_L", "slug": "gram-per-litre", "name": "Gram per litre", "symbol": "g/L", "code": "g_L", "aliases": [], "quantity_kind": "mass_concentration", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg_m3", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "mass_concentration.kg_m3_conc", "usage_status": "current", "expression": { "cx:g": 1, "cx:L": -1 }, "applicable_quantity_kinds": [ "mass_concentration", "mass_density" ], "content_digest": "bce228117dfa863fffe702ddb94aef2ad5cfaddec23698aca3023df794bd7835", "dependency_digest": "6cf35bc7191ebf3655d37777c0c67b7425b4f0db03b6d4d2c0d7434ceab4c319", "dependency_ids": [ "cx:L", "cx:g", "cx:g_L", "cx:kg", "cx:kg_m3", "cx:m", "cx:m3" ], "quantity_kinds": [ "mass_concentration", "mass_density" ], "kind_label": "Mass concentration / Mass density", "dimension": [ -3, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Chemistry", "Fluid", "Mechanical" ], "definition_lines": [ "1 g/L = (1 g)^1 × (1 L)^-1." ], "normalized_transform": { "reference_unit": "cx:kg_m3", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gram-per-litre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:mg_L", "slug": "milligram-per-litre", "name": "Milligram per litre", "symbol": "mg/L", "code": "mg_L", "aliases": [], "quantity_kind": "mass_concentration", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg_m3", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "mass_concentration.kg_m3_conc", "usage_status": "current", "expression": { "cx:mg": 1, "cx:L": -1 }, "applicable_quantity_kinds": [ "mass_concentration", "mass_density" ], "content_digest": "c6b1436a58346276031d7051cac1b909b684386e1f25bc087a1540e752c9e895", "dependency_digest": "3755716fde5cb37e4209fa4cd71f1a530f77ce127c4737fb694a078470a7fa3d", "dependency_ids": [ "cx:L", "cx:kg", "cx:kg_m3", "cx:m", "cx:m3", "cx:mg", "cx:mg_L" ], "quantity_kinds": [ "mass_concentration", "mass_density" ], "kind_label": "Mass concentration / Mass density", "dimension": [ -3, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Chemistry", "Fluid", "Mechanical" ], "definition_lines": [ "1 mg/L = (1 mg)^1 × (1 L)^-1." ], "normalized_transform": { "reference_unit": "cx:kg_m3", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/milligram-per-litre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:ug_L", "slug": "microgram-per-litre", "name": "Microgram per litre", "symbol": "µg/L", "code": "ug_L", "aliases": [ "μg/L", "ug/L" ], "quantity_kind": "mass_concentration", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg_m3", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "mass_concentration.kg_m3_conc", "usage_status": "current", "expression": { "cx:ug": 1, "cx:L": -1 }, "applicable_quantity_kinds": [ "mass_concentration", "mass_density" ], "content_digest": "df93ebad67b4ac2551c182891c42e4c4cdeb5ba89f987f789587cfc3b4c514ef", "dependency_digest": "712042babc99dde1ef0c1ca4a0bb911eb331e29b7a61866b43dcb3e90aac6466", "dependency_ids": [ "cx:L", "cx:kg", "cx:kg_m3", "cx:m", "cx:m3", "cx:ug", "cx:ug_L" ], "quantity_kinds": [ "mass_concentration", "mass_density" ], "kind_label": "Mass concentration / Mass density", "dimension": [ -3, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Chemistry", "Fluid", "Mechanical" ], "definition_lines": [ "1 µg/L = (1 µg)^1 × (1 L)^-1." ], "normalized_transform": { "reference_unit": "cx:kg_m3", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/microgram-per-litre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:mol_L", "slug": "mole-per-litre", "name": "Mole per litre", "symbol": "mol/L", "code": "mol_L", "aliases": [], "quantity_kind": "amount_concentration", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:mol_m3", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. 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Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "amount_concentration.mol_m3", "usage_status": "current", "expression": { "cx:umol": 1, "cx:L": -1 }, "content_digest": "0ed1e81e2eb9333091928ee2c24f0272fe28eb241ba391fa5aced2ca002397c9", "dependency_digest": "7cd869d8cdb6aa2668a56558bef325a5a411c0da499e97373b3b5bf3d8824c6f", "dependency_ids": [ "cx:L", "cx:m", "cx:m3", "cx:mol", "cx:mol_m3", "cx:umol", "cx:umol_L" ], "quantity_kinds": [ "amount_concentration" ], "kind_label": "Amount concentration", "dimension": [ -3, 0, 0, 0, 0, 1, 0 ], "roles": [ "scalar" ], "domains": [ "Chemistry" ], "definition_lines": [ "1 µmol/L = (1 µmol)^1 × (1 L)^-1." ], "normalized_transform": { "reference_unit": "cx:mol_m3", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/micromole-per-litre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:g_mol", "slug": "gram-per-mole", "name": "Gram per mole", "symbol": "g/mol", "code": "g_mol", "aliases": [], "quantity_kind": "molar_mass", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg_mol", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. 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Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "dynamic_viscosity.pa_s", "usage_status": "current", "expression": { "cx:mPa": 1, "cx:s": 1 }, "content_digest": "8f8c460dc96cae80da1c629e2ce27c798993f021bd03775fdb9c90b3e9f1af55", "dependency_digest": "54deafbde54247493f401a2e8386afe62c85782ae1c774b16ac1350830fb42c7", "dependency_ids": [ "cx:N", "cx:Pa", "cx:Pa_s", "cx:kg", "cx:m", "cx:mPa", "cx:mPa_s", "cx:s" ], "quantity_kinds": [ "dynamic_viscosity" ], "kind_label": "Dynamic viscosity", "dimension": [ -1, 1, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid" ], "definition_lines": [ "1 mPa·s = (1 mPa)^1 × (1 s)^1." ], "normalized_transform": { "reference_unit": "cx:Pa_s", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/millipascal-second", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:mm2_s", "slug": "square-millimetre-per-second", "name": "Square millimetre per second", "symbol": "mm²/s", "code": "mm2_s", "aliases": [ "mm2/s" ], "quantity_kind": "kinematic_viscosity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m2_s", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "kinematic_viscosity.m2_s", "usage_status": "current", "expression": { "cx:mm2": 1, "cx:s": -1 }, "content_digest": "9cfeffca0a5227979cefbfb93d71c0057a39f40d11b0002f9c327f59e76ece86", "dependency_digest": "ded8c03b6672c2cd7f012ddec306e70b9c2defc4b155cebdd19dffdfb0b47fe2", "dependency_ids": [ "cx:m", "cx:m2", "cx:m2_s", "cx:mm", "cx:mm2", "cx:mm2_s", "cx:s" ], "quantity_kinds": [ "kinematic_viscosity" ], "kind_label": "Kinematic viscosity", "dimension": [ 2, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid" ], "definition_lines": [ "1 mm²/s = (1 mm²)^1 × (1 s)^-1." ], "normalized_transform": { "reference_unit": "cx:m2_s", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/square-millimetre-per-second", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:mN_m", "slug": "millinewton-per-metre", "name": "Millinewton per metre", "symbol": "mN/m", "code": "mN_m", "aliases": [], "quantity_kind": "surface_tension", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:N_m_surface", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "surface_tension.n_m_surface", "usage_status": "current", "expression": { "cx:mN": 1, "cx:m": -1 }, "content_digest": "35ecdabc962cfecffdee83421355b26db2cf98bfe47f9cd419476aceede01815", "dependency_digest": "04d395201ce3750374625d94227e4083a0cad0c679024b48a8fcc316378e4e3b", "dependency_ids": [ "cx:N", "cx:N_m_surface", "cx:kg", "cx:m", "cx:mN", "cx:mN_m", "cx:s" ], "quantity_kinds": [ "surface_tension" ], "kind_label": "Surface tension", "dimension": [ 0, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid" ], "definition_lines": [ "1 mN/m = (1 mN)^1 × (1 m)^-1." ], "normalized_transform": { "reference_unit": "cx:N_m_surface", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/millinewton-per-metre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:mW_m_K", "slug": "milliwatt-per-metre-kelvin", "name": "Milliwatt per metre kelvin", "symbol": "mW/(m·K)", "code": "mW_m_K", "aliases": [ "mW/(m*K)" ], "quantity_kind": "thermal_conductivity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:W_m_K", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Temperature factors are differences (intervals), explicitly declared in expression_roles. Absolute temperature offsets do not participate. Definition metadata, not a claim that an existing calculator is migrated.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "thermal_conductivity.w_m_k", "usage_status": "current", "expression": { "cx:mW": 1, "cx:m": -1, "cx:K": -1 }, "expression_roles": { "cx:K": "interval" }, "content_digest": "a3672d5f10552df98a4ad2e2c51b9a69844b41a6850543c161a3a0adc446e112", "dependency_digest": "20caf4f24262756c9f266464226fce75ba5dbad86ce045bc45e8d9e7cb4a12ac", "dependency_ids": [ "cx:J", "cx:K", "cx:N", "cx:W", "cx:W_m_K", "cx:kg", "cx:m", "cx:mW", "cx:mW_m_K", "cx:s" ], "quantity_kinds": [ "thermal_conductivity" ], "kind_label": "Thermal conductivity", "dimension": [ 1, 1, -3, 0, -1, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Thermal" ], "definition_lines": [ "1 mW/(m·K) = (1 mW)^1 × (1 m)^-1 × (1 ΔK)^-1." ], "normalized_transform": { "reference_unit": "cx:W_m_K", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/milliwatt-per-metre-kelvin", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:kJ_kg_K", "slug": "kilojoule-per-kilogram-kelvin", "name": "Kilojoule per kilogram kelvin", "symbol": "kJ/(kg·K)", "code": "kJ_kg_K", "aliases": [ "kJ/(kg*K)" ], "quantity_kind": "specific_heat_capacity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:J_kg_K", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Temperature factors are differences (intervals), explicitly declared in expression_roles. Absolute temperature offsets do not participate. 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Absolute temperature offsets do not participate. 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Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "specific_energy.j_kg", "usage_status": "current", "expression": { "cx:kJ": 1, "cx:kg": -1 }, "content_digest": "7ec9a19ad4b5d6650bfb1f7ba0adb40e16a958f84d058a1ef8dcd42aa18f6afc", "dependency_digest": "7608289645c95e7f0e29c47194ae8a65774a0aa609f977cee2cde1838145800f", "dependency_ids": [ "cx:J", "cx:J_kg", "cx:N", "cx:kJ", "cx:kJ_kg", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "specific_energy" ], "kind_label": "Specific energy", "dimension": [ 2, 0, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Thermal" ], "definition_lines": [ "1 kJ/kg = (1 kJ)^1 × (1 kg)^-1." ], "normalized_transform": { "reference_unit": "cx:J_kg", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilojoule-per-kilogram", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:delta_degC_W", "slug": "celsius-difference-per-watt", "name": "Celsius difference per watt", "symbol": "°C/W", "code": "delta_degC_W", "aliases": [], "quantity_kind": "thermal_resistance", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:K_W", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Temperature factors are differences (intervals), explicitly declared in expression_roles. Absolute temperature offsets do not participate. Definition metadata, not a claim that an existing calculator is migrated.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "thermal_resistance.k_w", "usage_status": "current", "expression": { "cx:degC": 1, "cx:W": -1 }, "expression_roles": { "cx:degC": "interval" }, "content_digest": "ace1af4ec0a7cb6d299c5b1c52cfe32b047e7a4ff93139286b6d3c8b4ae19477", "dependency_digest": "527ecd49548fbbbbff59d0cbee60a695dbea13186d28fc80fbc4b8a82cc0890e", "dependency_ids": [ "cx:J", "cx:K", "cx:K_W", "cx:N", "cx:W", "cx:degC", "cx:delta_degC_W", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "thermal_resistance" ], "kind_label": "Thermal resistance", "dimension": [ -2, -1, 3, 0, 1, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Thermal", "Electrical" ], "definition_lines": [ "1 °C/W = (1 Δ°C)^1 × (1 W)^-1." ], "normalized_transform": { "reference_unit": "cx:K_W", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/celsius-difference-per-watt", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:per_delta_degC", "slug": "reciprocal-celsius-difference", "name": "Reciprocal Celsius difference", "symbol": "/°C", "code": "per_delta_degC", "aliases": [], "quantity_kind": "temperature_coefficient", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:per_K", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Temperature factors are differences (intervals), explicitly declared in expression_roles. Absolute temperature offsets do not participate. 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Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electrical_resistivity.ohm_m", "usage_status": "current", "expression": { "cx:ohm": 1, "cx:cm": 1 }, "content_digest": "870ba8b3fc7b0def8fc00d1ef2861e0aa6f94835db2148dacd443e0bc3839008", "dependency_digest": "a9066b727127aef7dd10ddd499fbe667fc43fbf619fd06a73c6d3410bfd44d45", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:V", "cx:W", "cx:cm", "cx:kg", "cx:m", "cx:ohm", "cx:ohm_cm", "cx:ohm_m", "cx:s" ], "quantity_kinds": [ "electrical_resistivity" ], "kind_label": "Electrical resistivity", "dimension": [ 3, 1, -3, -2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 Ω·cm = (1 Ω)^1 × (1 cm)^1." ], "normalized_transform": { "reference_unit": "cx:ohm_m", "scale": { "numerator": "1", "denominator": "100" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/ohm-centimetre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:S_cm", "slug": "siemens-per-centimetre", "name": "Siemens per centimetre", "symbol": "S/cm", "code": "S_cm", "aliases": [], "quantity_kind": "electrical_conductivity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:S_m", "scale": { "numerator": "100", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electrical_conductivity.s_m", "usage_status": "current", "expression": { "cx:S": 1, "cx:cm": -1 }, "content_digest": "3583017a4e1b3cf8d3c715c17f60d0ff9a76f940c94bf38a56b5d59dca612e8c", "dependency_digest": "ba047bf90af16ccd4c1e0a8042a98028337fa854adb23280b938055f19c7009f", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:S", "cx:S_cm", "cx:S_m", "cx:V", "cx:W", "cx:cm", "cx:kg", "cx:m", "cx:ohm", "cx:s" ], "quantity_kinds": [ "electrical_conductivity" ], "kind_label": "Electrical conductivity", "dimension": [ -3, -1, 3, 2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "Chemistry" ], "definition_lines": [ "1 S/cm = (1 S)^1 × (1 cm)^-1." ], "normalized_transform": { "reference_unit": "cx:S_m", "scale": { "numerator": "100", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/siemens-per-centimetre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:mm4", "slug": "millimetre-to-the-fourth-power", "name": "Millimetre to the fourth power", "symbol": "mm⁴", "code": "mm4", "aliases": [ "mm4" ], "quantity_kind": "area_moment", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m4", "scale": { "numerator": "1", "denominator": "1000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "area_moment.m4", "usage_status": "current", "expression": { "cx:mm": 4 }, "content_digest": "f03c87c8df89ff88322e2616ad235ee116bd66e02b4212e687e539d999060778", "dependency_digest": "9175d58ae53b0e2e2232be5e8cf5dbcedaf9cf82042cd7d9a3d0e0ca8e25345f", "dependency_ids": [ "cx:m", "cx:m4", "cx:mm", "cx:mm4" ], "quantity_kinds": [ "area_moment" ], "kind_label": "Second moment of area", "dimension": [ 4, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 mm⁴ = (1 mm)^4." ], "normalized_transform": { "reference_unit": "cx:m4", "scale": { "numerator": "1", "denominator": "1000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/millimetre-to-the-fourth-power", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:cm4", "slug": "centimetre-to-the-fourth-power", "name": "Centimetre to the fourth power", "symbol": "cm⁴", "code": "cm4", "aliases": [ "cm4" ], "quantity_kind": "area_moment", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m4", "scale": { "numerator": "1", "denominator": "100000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "area_moment.m4", "usage_status": "current", "expression": { "cx:cm": 4 }, "content_digest": "93e4e11324c199bc3e89f63e5cfc882cfdc67025e7c05493054c182eb63b0dee", "dependency_digest": "5dc8f79df0bb2c134af9f2cde08145a3585cdb00d3d201f9e78a80777d2c7ff3", "dependency_ids": [ "cx:cm", "cx:cm4", "cx:m", "cx:m4" ], "quantity_kinds": [ "area_moment" ], "kind_label": "Second moment of area", "dimension": [ 4, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 cm⁴ = (1 cm)^4." ], "normalized_transform": { "reference_unit": "cx:m4", "scale": { "numerator": "1", "denominator": "100000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/centimetre-to-the-fourth-power", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:in4", "slug": "inch-to-the-fourth-power", "name": "Inch to the fourth power", "symbol": "in⁴", "code": "in4", "aliases": [ "in4" ], "quantity_kind": "area_moment", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m4", "scale": { "numerator": "260144641", "denominator": "625000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. 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Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "international_yard_pound" ], "family_id": "area_moment.m4", "usage_status": "current", "expression": { "cx:ft_i": 4 }, "content_digest": "e8888b465b158f147eb69a6cf55196dec1ec85254f87d7085e4fa15b9dcd5010", "dependency_digest": "3559ff5994616ab0a8619bb0ee5a3dfa31b857d2778d0362d26dd6cf91e76a78", "dependency_ids": [ "cx:ft4", "cx:ft_i", "cx:m", "cx:m4" ], "quantity_kinds": [ "area_moment" ], "kind_label": "Second moment of area", "dimension": [ 4, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 ft⁴ = (1 ft)^4." ], "normalized_transform": { "reference_unit": "cx:m4", "scale": { "numerator": "21071715921", "denominator": "2441406250000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/foot-to-the-fourth-power", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:mm3", "slug": "cubic-millimetre", "name": "Cubic millimetre", "symbol": "mm³", "code": "mm3", "aliases": [ "mm3" ], "quantity_kind": "volume", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m3", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "volume.m3", "usage_status": "current", "expression": { "cx:mm": 3 }, "applicable_quantity_kinds": [ "volume", "section_modulus" ], "content_digest": "43b5cd8d430527f5c2223ad0bb1c77cc24857a8d84d49d9bc7c1a8399f61cd98", "dependency_digest": "6cdc785dbaf3a197b09d0c549be5c7687f330e793382f551e40d410d1063f708", "dependency_ids": [ "cx:m", "cx:m3", "cx:mm", "cx:mm3" ], "quantity_kinds": [ "volume", "section_modulus" ], "kind_label": "Volume / Section modulus", "dimension": [ 3, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluids", "Chemistry", "Mechanical" ], "definition_lines": [ "1 mm³ = (1 mm)^3." ], "normalized_transform": { "reference_unit": "cx:m3", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/cubic-millimetre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:lbf_ft", "slug": "pound-force-foot", "name": "Pound-force foot", "symbol": "lbf·ft", "code": "lbf_ft", "aliases": [ "lbf*ft" ], "quantity_kind": "torque", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:N_m", "scale": { "numerator": "3389544870828501", "denominator": "2500000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "international_yard_pound" ], "family_id": "torque.n_m", "usage_status": "current", "expression": { "cx:lbf": 1, "cx:ft_i": 1 }, "content_digest": "2e32d0a2b298bf85ceb628d891b678e056d891ce6b9efffaea976101eb03142a", "dependency_digest": "9480cd70b772f1ec665dfa1ff3062d4ea327e22f4f1ad10f29098a17ae559fd1", "dependency_ids": [ "cx:N", "cx:N_m", "cx:ft_i", "cx:kg", "cx:lbf", "cx:lbf_ft", "cx:m", "cx:s" ], "quantity_kinds": [ "torque" ], "kind_label": "Torque", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 lbf·ft = (1 lbf)^1 × (1 ft)^1." ], "normalized_transform": { "reference_unit": "cx:N_m", "scale": { "numerator": "3389544870828501", "denominator": "2500000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/pound-force-foot", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:lbf_in", "slug": "pound-force-inch", "name": "Pound-force inch", "symbol": "lbf·in", "code": "lbf_in", "aliases": [ "lbf*in" ], "quantity_kind": "torque", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:N_m", "scale": { "numerator": "1129848290276167", "denominator": "10000000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "international_yard_pound" ], "family_id": "torque.n_m", "usage_status": "current", "expression": { "cx:lbf": 1, "cx:in_i": 1 }, "content_digest": "34af1c4de2dea3f60b1b47d410b3e313cde9261f4bf165d5a29537868dcc8bc2", "dependency_digest": "32d07931ce89a334b6b9c3d0d0a3120631f0276cb7f1a939107e99719d9f61e8", "dependency_ids": [ "cx:N", "cx:N_m", "cx:in_i", "cx:kg", "cx:lbf", "cx:lbf_in", "cx:m", "cx:s" ], "quantity_kinds": [ "torque" ], "kind_label": "Torque", "dimension": [ 2, 1, -2, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Mechanical" ], "definition_lines": [ "1 lbf·in = (1 lbf)^1 × (1 in)^1." ], "normalized_transform": { "reference_unit": "cx:N_m", "scale": { "numerator": "1129848290276167", "denominator": "10000000000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/pound-force-inch", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:oz_ft2", "slug": "ounce-per-square-foot-avoirdupois", "name": "Ounce per square foot (avoirdupois)", "symbol": "oz/ft²", "code": "oz_ft2", "aliases": [ "oz/ft2" ], "quantity_kind": "areal_mass_density", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:kg_m2", "scale": { "numerator": "45359237", "denominator": "148644864" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "us_customary" ], "family_id": "areal_mass_density.kg_m2", "usage_status": "current", "expression": { "cx:oz_av": 1, "cx:ft2_i": -1 }, "content_digest": "5aaa135772a646e5a5dc5fecdd4eccd3d122069b49a0335045c3c3149a267887", "dependency_digest": "44da072b2189e26821b4eecf0de8906e128aaf79db4381ea05b0364daab80f2d", "dependency_ids": [ "cx:ft2_i", "cx:ft_i", "cx:kg", "cx:kg_m2", "cx:m", "cx:m2", "cx:oz_av", "cx:oz_ft2" ], "quantity_kinds": [ "areal_mass_density" ], "kind_label": "Areal mass density", "dimension": [ -2, 1, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "Mechanical" ], "definition_lines": [ "1 oz/ft² = (1 oz)^1 × (1 ft²)^-1." ], "normalized_transform": { "reference_unit": "cx:kg_m2", "scale": { "numerator": "45359237", "denominator": "148644864" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/ounce-per-square-foot-avoirdupois", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:W_cm2", "slug": "watt-per-square-centimetre", "name": "Watt per square centimetre", "symbol": "W/cm²", "code": "W_cm2", "aliases": [ "W/cm2" ], "quantity_kind": "irradiance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:W_m2", "scale": { "numerator": "10000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "irradiance.w_m2", "usage_status": "current", "expression": { "cx:W": 1, "cx:cm2": -1 }, "content_digest": "928631e17196f79378bc668be14f4c9575b20b63c1fece45b144e39a53cb52b9", "dependency_digest": "02582b000bbb8d286e4f24b13301c5a20680dc4cd9963c2d4f58d15127c5c037", "dependency_ids": [ "cx:J", "cx:N", "cx:W", "cx:W_cm2", "cx:W_m2", "cx:cm", "cx:cm2", "cx:kg", "cx:m", "cx:m2", "cx:s" ], "quantity_kinds": [ "irradiance" ], "kind_label": "Irradiance", "dimension": [ 0, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Optics", "Thermal" ], "definition_lines": [ "1 W/cm² = (1 W)^1 × (1 cm²)^-1." ], "normalized_transform": { "reference_unit": "cx:W_m2", "scale": { "numerator": "10000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/watt-per-square-centimetre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:kW_m2", "slug": "kilowatt-per-square-metre", "name": "Kilowatt per square metre", "symbol": "kW/m²", "code": "kW_m2", "aliases": [ "kW/m2" ], "quantity_kind": "irradiance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:W_m2", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "irradiance.w_m2", "usage_status": "current", "expression": { "cx:kW": 1, "cx:m2": -1 }, "content_digest": "9498bea8baf58be695dc2939fd452b6b28172bc2f4e2785030101dde472578d3", "dependency_digest": "02f5213c4e5e09cf96f7119fe49af75bfc660030e7a67a9caf0f60a315e1cb17", "dependency_ids": [ "cx:J", "cx:N", "cx:W", "cx:W_m2", "cx:kW", "cx:kW_m2", "cx:kg", "cx:m", "cx:m2", "cx:s" ], "quantity_kinds": [ "irradiance" ], "kind_label": "Irradiance", "dimension": [ 0, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Optics", "Thermal" ], "definition_lines": [ "1 kW/m² = (1 kW)^1 × (1 m²)^-1." ], "normalized_transform": { "reference_unit": "cx:W_m2", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilowatt-per-square-metre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:uPa_s", "slug": "micropascal-second", "name": "Micropascal second", "symbol": "µPa·s", "code": "uPa_s", "aliases": [ "μPa·s", "uPa·s", "µPa*s" ], "quantity_kind": "dynamic_viscosity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Pa_s", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Micropascal second; exact relation distinguished from rounded tabular display" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "dynamic_viscosity.pa_s", "usage_status": "current", "content_digest": "b2f7150a6eb29b194a9b7fde0d9ec530d339b92e144dc49b126e409256d7bc49", "dependency_digest": "8ae09336c200d777830c023d8e6a8b614b27d2dc617190f126816417fe18944d", "dependency_ids": [ "cx:N", "cx:Pa", "cx:Pa_s", "cx:kg", "cx:m", "cx:s", "cx:uPa_s" ], "quantity_kinds": [ "dynamic_viscosity" ], "kind_label": "Dynamic viscosity", "dimension": [ -1, 1, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid" ], "definition_lines": [ "1 µPa·s = 0.000001 Pa·s." ], "normalized_transform": { "reference_unit": "cx:Pa_s", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/micropascal-second", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Micropascal second; exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:P", "slug": "poise", "name": "Poise", "symbol": "P", "code": "P", "aliases": [], "quantity_kind": "dynamic_viscosity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Pa_s", "scale": { "numerator": "1", "denominator": "10" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Poise; exact relation distinguished from rounded tabular display" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "cgs" ], "family_id": "dynamic_viscosity.pa_s", "usage_status": "current", "content_digest": "7791204b95b9854eb3394f19de456e03784828606615406f87623ad2fb348945", "dependency_digest": "a55e51832feca2182d2a70bbfec3ab6c90b2d385311de4379800548e59c4ea04", "dependency_ids": [ "cx:N", "cx:P", "cx:Pa", "cx:Pa_s", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "dynamic_viscosity" ], "kind_label": "Dynamic viscosity", "dimension": [ -1, 1, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid" ], "definition_lines": [ "1 P = 0.1 Pa·s." ], "normalized_transform": { "reference_unit": "cx:Pa_s", "scale": { "numerator": "1", "denominator": "10" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/poise", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Poise; exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:cP", "slug": "centipoise", "name": "Centipoise", "symbol": "cP", "code": "cP", "aliases": [], "quantity_kind": "dynamic_viscosity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Pa_s", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Centipoise; exact relation distinguished from rounded tabular display" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "cgs" ], "family_id": "dynamic_viscosity.pa_s", "usage_status": "current", "content_digest": "fd14420122347e496e028ad3e7534875223dd30a60e5b07c505045c2e0402b17", "dependency_digest": "2e517c3a68034cd79e479c8e1997ca0f00070f21be5b1e666d9c6031f7e2a5e3", "dependency_ids": [ "cx:N", "cx:Pa", "cx:Pa_s", "cx:cP", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "dynamic_viscosity" ], "kind_label": "Dynamic viscosity", "dimension": [ -1, 1, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid" ], "definition_lines": [ "1 cP = 0.001 Pa·s." ], "normalized_transform": { "reference_unit": "cx:Pa_s", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/centipoise", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Centipoise; exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:St", "slug": "stokes", "name": "Stokes", "symbol": "St", "code": "St", "aliases": [], "quantity_kind": "kinematic_viscosity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m2_s", "scale": { "numerator": "1", "denominator": "10000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Stokes; exact relation distinguished from rounded tabular display" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "cgs" ], "family_id": "kinematic_viscosity.m2_s", "usage_status": "current", "content_digest": "f67afa2700c899f04c7201c355a5b1aa67d77ac911924595d280daf0fcdfd7df", "dependency_digest": "3c3db713f92159d2785c81b8814bdf7bac89cfc56ed2fa75a9bbefdab0a8bf66", "dependency_ids": [ "cx:St", "cx:m", "cx:m2", "cx:m2_s", "cx:s" ], "quantity_kinds": [ "kinematic_viscosity" ], "kind_label": "Kinematic viscosity", "dimension": [ 2, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid" ], "definition_lines": [ "1 St = 0.0001 m²/s." ], "normalized_transform": { "reference_unit": "cx:m2_s", "scale": { "numerator": "1", "denominator": "10000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/stokes", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Stokes; exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:cSt", "slug": "centistokes", "name": "Centistokes", "symbol": "cSt", "code": "cSt", "aliases": [], "quantity_kind": "kinematic_viscosity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:m2_s", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: Centistokes; exact relation distinguished from rounded tabular display" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "cgs" ], "family_id": "kinematic_viscosity.m2_s", "usage_status": "current", "content_digest": "a109242e5c2a90d74c4016b7b3e45593df9cc7194050d15d41c9f0cba991568a", "dependency_digest": "83d94b9281ad0524bb10e6deae4497d50b8f9e6a2786c252555f2c97a27c2bf9", "dependency_ids": [ "cx:cSt", "cx:m", "cx:m2", "cx:m2_s", "cx:s" ], "quantity_kinds": [ "kinematic_viscosity" ], "kind_label": "Kinematic viscosity", "dimension": [ 2, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Fluid" ], "definition_lines": [ "1 cSt = 0.000001 m²/s." ], "normalized_transform": { "reference_unit": "cx:m2_s", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/centistokes", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: Centistokes; exact relation distinguished from rounded tabular display" } ] }, { "unit_id": "cx:mS", "slug": "millisiemens", "name": "Millisiemens", "symbol": "mS", "code": "mS", "aliases": [], "quantity_kind": "electrical_conductance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:S", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electrical_conductance.s", "usage_status": "current", "content_digest": "a17de7306ef5be82089d7fa12be034b2e948c8251388944aa791176fcec09348", "dependency_digest": "54c16461184d27e02ff5738d0950803412ac58dab839665457438277cf9e1e05", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:S", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:mS", "cx:ohm", "cx:s" ], "quantity_kinds": [ "electrical_conductance" ], "kind_label": "Electrical conductance", "dimension": [ -2, -1, 3, 2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 mS = 0.001 S." ], "normalized_transform": { "reference_unit": "cx:S", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/millisiemens", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:uS", "slug": "microsiemens", "name": "Microsiemens", "symbol": "µS", "code": "uS", "aliases": [ "μS", "uS" ], "quantity_kind": "electrical_conductance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:S", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electrical_conductance.s", "usage_status": "current", "content_digest": "4fbd541650793c33eeb02664a39906447d7476998f76c533136908b03c426bb1", "dependency_digest": "adf7eb937a6f52c4f35b38631a43af3c9f34e805bdc4ea9591fe917abf4ebe3a", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:S", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:ohm", "cx:s", "cx:uS" ], "quantity_kinds": [ "electrical_conductance" ], "kind_label": "Electrical conductance", "dimension": [ -2, -1, 3, 2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 µS = 0.000001 S." ], "normalized_transform": { "reference_unit": "cx:S", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/microsiemens", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:nS", "slug": "nanosiemens", "name": "Nanosiemens", "symbol": "nS", "code": "nS", "aliases": [], "quantity_kind": "electrical_conductance", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:S", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electrical_conductance.s", "usage_status": "current", "content_digest": "9559a85c77e488e5e2e1f8aa99cca02872dda3461331130ba23b44d89efd0c1f", "dependency_digest": "854f946faf2ddde6a4adc8648ddc2259594b5fdbbd2ceaf802e37aba74d2a6ae", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:S", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:nS", "cx:ohm", "cx:s" ], "quantity_kinds": [ "electrical_conductance" ], "kind_label": "Electrical conductance", "dimension": [ -2, -1, 3, 2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 nS = 0.000000001 S." ], "normalized_transform": { "reference_unit": "cx:S", "scale": { "numerator": "1", "denominator": "1000000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/nanosiemens", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:uS_cm", "slug": "microsiemens-per-centimetre", "name": "Microsiemens per centimetre", "symbol": "µS/cm", "code": "uS_cm", "aliases": [ "μS/cm", "uS/cm" ], "quantity_kind": "electrical_conductivity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:S_m", "scale": { "numerator": "1", "denominator": "10000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electrical_conductivity.s_m", "usage_status": "current", "content_digest": "7660832353662e9a38bf1dcebc23684d9eb3f9e1b48b3aeaea7592434ce6b59e", "dependency_digest": "dd0c083d4fc0be2d452884a9006949fad4dbe2c6459f0923dc7977c2846830ad", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:S", "cx:S_m", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:ohm", "cx:s", "cx:uS_cm" ], "quantity_kinds": [ "electrical_conductivity" ], "kind_label": "Electrical conductivity", "dimension": [ -3, -1, 3, 2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "Chemistry" ], "definition_lines": [ "1 µS/cm = 0.0001 S/m." ], "normalized_transform": { "reference_unit": "cx:S_m", "scale": { "numerator": "1", "denominator": "10000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/microsiemens-per-centimetre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:mS_cm", "slug": "millisiemens-per-centimetre", "name": "Millisiemens per centimetre", "symbol": "mS/cm", "code": "mS_cm", "aliases": [], "quantity_kind": "electrical_conductivity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:S_m", "scale": { "numerator": "1", "denominator": "10" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "electrical_conductivity.s_m", "usage_status": "current", "content_digest": "bbc3357b47a291e8464df58a475940d911be35838520d68cd4f905955c6cc075", "dependency_digest": "e60b72a846849e81c527c25f7942c6be026437f379f06a576f5db17dddacb468", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:S", "cx:S_m", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:mS_cm", "cx:ohm", "cx:s" ], "quantity_kinds": [ "electrical_conductivity" ], "kind_label": "Electrical conductivity", "dimension": [ -3, -1, 3, 2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical", "Chemistry" ], "definition_lines": [ "1 mS/cm = 0.1 S/m." ], "normalized_transform": { "reference_unit": "cx:S_m", "scale": { "numerator": "1", "denominator": "10" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/millisiemens-per-centimetre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:kVA", "slug": "kilovolt-ampere", "name": "Kilovolt ampere", "symbol": "kVA", "code": "kVA", "aliases": [], "quantity_kind": "apparent_power", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:VA", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "apparent_power.va", "usage_status": "current", "content_digest": "1db7cd0b61dc1a1daa4b05335a6d2d7c0bb5eecb82d58e62b64687424cd4ef8e", "dependency_digest": "484d10b4d7d064d7ad87c7d34bc2e278f4ca2a7033f74c92bb9cbbac21352259", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:V", "cx:VA", "cx:W", "cx:kVA", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "apparent_power" ], "kind_label": "Apparent power", "dimension": [ 2, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 kVA = 1000 VA." ], "normalized_transform": { "reference_unit": "cx:VA", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilovolt-ampere", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:MVA", "slug": "megavolt-ampere", "name": "Megavolt ampere", "symbol": "MVA", "code": "MVA", "aliases": [], "quantity_kind": "apparent_power", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:VA", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "apparent_power.va", "usage_status": "current", "content_digest": "731890477fb92d745cf5602859d16fb7deb0e50427a880beea3d95cfd5917440", "dependency_digest": "6c876f2e8168fa9828564d5bd47d2e91e2ad70133419e8887f0247936fb5a6cd", "dependency_ids": [ "cx:A", "cx:J", "cx:MVA", "cx:N", "cx:V", "cx:VA", "cx:W", "cx:kg", "cx:m", "cx:s" ], "quantity_kinds": [ "apparent_power" ], "kind_label": "Apparent power", "dimension": [ 2, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 MVA = 1000000 VA." ], "normalized_transform": { "reference_unit": "cx:VA", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/megavolt-ampere", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:kvar", "slug": "kilovar", "name": "Kilovar", "symbol": "kvar", "code": "kvar", "aliases": [], "quantity_kind": "reactive_power", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:var", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "reactive_power.var", "usage_status": "current", "content_digest": "df409d0baeee4782d0c1e04e52658fed4cd21ff8408452b8e314f86b07878555", "dependency_digest": "ca9f895f8e6092abef88519a95b01e938804ae6f1c476526e629d977af5b6686", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:V", "cx:W", "cx:kg", "cx:kvar", "cx:m", "cx:s", "cx:var" ], "quantity_kinds": [ "reactive_power" ], "kind_label": "Reactive power", "dimension": [ 2, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 kvar = 1000 var." ], "normalized_transform": { "reference_unit": "cx:var", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilovar", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:Mvar", "slug": "megavar", "name": "Megavar", "symbol": "Mvar", "code": "Mvar", "aliases": [], "quantity_kind": "reactive_power", "owner_pack": "core.metrology", "revision": "1.0.1", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:var", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_accepted" ], "family_id": "reactive_power.var", "usage_status": "current", "content_digest": "e5a93df2faa04097fd8acc5014e6b63fd04895aa774a4ac8429d0f398abdb0ff", "dependency_digest": "c676ae38154ffbf38c7d6c10fe14fd53497ef0d68b7b8b5e54b283091c67348c", "dependency_ids": [ "cx:A", "cx:J", "cx:Mvar", "cx:N", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:s", "cx:var" ], "quantity_kinds": [ "reactive_power" ], "kind_label": "Reactive power", "dimension": [ 2, 1, -3, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 Mvar = 1000000 var." ], "normalized_transform": { "reference_unit": "cx:var", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/megavar", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:kBq", "slug": "kilobecquerel", "name": "Kilobecquerel", "symbol": "kBq", "code": "kBq", "aliases": [], "quantity_kind": "radioactivity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Bq", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "radioactivity.bq", "usage_status": "current", "content_digest": "931073f87d21b14b94019d49324ff26aa94746e273da20e5abbc440a7cf0b496", "dependency_digest": "e7478caf677e55651cfa29edc3a0ff2117e01ebd15cc56a15f6df68785b06fd0", "dependency_ids": [ "cx:Bq", "cx:kBq", "cx:s" ], "quantity_kinds": [ "radioactivity" ], "kind_label": "Activity", "dimension": [ 0, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Physics" ], "definition_lines": [ "1 kBq = 1000 Bq." ], "normalized_transform": { "reference_unit": "cx:Bq", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilobecquerel", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:MBq", "slug": "megabecquerel", "name": "Megabecquerel", "symbol": "MBq", "code": "MBq", "aliases": [], "quantity_kind": "radioactivity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Bq", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "radioactivity.bq", "usage_status": "current", "content_digest": "33738f4937c02ccf274d4cf2e407f0ffb81536d79f16fb56c2bc8186c540a59c", "dependency_digest": "51b0bd795f42bbf7be6f23f1e6066fe20a2e1fdbe68a7a5c6cb345049dc981dd", "dependency_ids": [ "cx:Bq", "cx:MBq", "cx:s" ], "quantity_kinds": [ "radioactivity" ], "kind_label": "Activity", "dimension": [ 0, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Physics" ], "definition_lines": [ "1 MBq = 1000000 Bq." ], "normalized_transform": { "reference_unit": "cx:Bq", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/megabecquerel", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:mGy", "slug": "milligray", "name": "Milligray", "symbol": "mGy", "code": "mGy", "aliases": [], "quantity_kind": "absorbed_dose", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Gy", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. 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Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "other" ], "family_id": "information.bit", "usage_status": "current", "content_digest": "d30ce3fb710558be1de328697d2ca65d304310e40d3852d63afe014f9842cf0e", "dependency_digest": "3ebaf6f5c8f29b77239af06027f815b661b19b1aed8f5228f0cbf19ce0440ef3", "dependency_ids": [ "cx:MiB", "cx:bit" ], "quantity_kinds": [ "information" ], "kind_label": "Information quantity", "dimension": [ 0, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Computing" ], "definition_lines": [ "1 MiB = 8388608 bit." ], "normalized_transform": { "reference_unit": "cx:bit", "scale": { "numerator": "8388608", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/mebibyte", "verification": "not_assessed", "sources": [ { "id": "source:nist-binary-prefixes", "publisher": "NIST", "title": "Prefixes for binary multiples", "url": "https://physics.nist.gov/cuu/Units/binary.html", "edition": "IEC binary multiples and SI comparisons; web reference", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Binary prefix table and SI comparisons: decimal k/M/G/T versus Ki/Mi/Gi/Ti" } ] }, { "unit_id": "cx:GiB", "slug": "gibibyte", "name": "Gibibyte", "symbol": "GiB", "code": "GiB", "aliases": [], "quantity_kind": "information", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:bit", "scale": { "numerator": "8589934592", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-binary-prefixes", "locator": "Binary prefix table and SI comparisons: decimal k/M/G/T versus Ki/Mi/Gi/Ti" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "other" ], "family_id": "information.bit", "usage_status": "current", "content_digest": "ac4760a0e022ba54dcf45712390d1415793d17bba39bf48a831165f6206004d2", "dependency_digest": "67a97c2b32f6642a57996cd70de779fddac69abad25e341c5820684c102bf571", "dependency_ids": [ "cx:GiB", "cx:bit" ], "quantity_kinds": [ "information" ], "kind_label": "Information quantity", "dimension": [ 0, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Computing" ], "definition_lines": [ "1 GiB = 8589934592 bit." ], "normalized_transform": { "reference_unit": "cx:bit", "scale": { "numerator": "8589934592", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gibibyte", "verification": "not_assessed", "sources": [ { "id": "source:nist-binary-prefixes", "publisher": "NIST", "title": "Prefixes for binary multiples", "url": "https://physics.nist.gov/cuu/Units/binary.html", "edition": "IEC binary multiples and SI comparisons; web reference", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Binary prefix table and SI comparisons: decimal k/M/G/T versus Ki/Mi/Gi/Ti" } ] }, { "unit_id": "cx:TiB", "slug": "tebibyte", "name": "Tebibyte", "symbol": "TiB", "code": "TiB", "aliases": [], "quantity_kind": "information", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:bit", "scale": { "numerator": "8796093022208", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-binary-prefixes", "locator": "Binary prefix table and SI comparisons: decimal k/M/G/T versus Ki/Mi/Gi/Ti" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "other" ], "family_id": "information.bit", "usage_status": "current", "content_digest": "9aaf66dbec1b30b220249949c58cf3f0196a6b2dfc3a117f786d53354dc8a888", "dependency_digest": "15ff8012394c7443fa9359c7333f5e21b6a5d50c36e66865e5236d48d903cca9", "dependency_ids": [ "cx:TiB", "cx:bit" ], "quantity_kinds": [ "information" ], "kind_label": "Information quantity", "dimension": [ 0, 0, 0, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Computing" ], "definition_lines": [ "1 TiB = 8796093022208 bit." ], "normalized_transform": { "reference_unit": "cx:bit", "scale": { "numerator": "8796093022208", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/tebibyte", "verification": "not_assessed", "sources": [ { "id": "source:nist-binary-prefixes", "publisher": "NIST", "title": "Prefixes for binary multiples", "url": "https://physics.nist.gov/cuu/Units/binary.html", "edition": "IEC binary multiples and SI comparisons; web reference", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Binary prefix table and SI comparisons: decimal k/M/G/T versus Ki/Mi/Gi/Ti" } ] }, { "unit_id": "cx:bit_s", "slug": "bit-per-second", "name": "Bit per second", "symbol": "bit/s", "code": "bit_s", "aliases": [], "quantity_kind": "information_rate", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:bit_s", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Definition metadata. 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Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "other" ], "family_id": "information_rate.bit_s", "usage_status": "current", "content_digest": "ac9908175310bf42cddf4a0c7854fb27c9b3c226f0f5405e2ef5689f90446e6c", "dependency_digest": "9f31e966e5c3925354ab312ca1df6a614e3a28e8cc04afd6680d3432b14fb06b", "dependency_ids": [ "cx:bit", "cx:bit_s", "cx:kbit_s", "cx:s" ], "quantity_kinds": [ "information_rate" ], "kind_label": "Information rate", "dimension": [ 0, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Computing" ], "definition_lines": [ "1 kbit/s = 1000 bit/s." ], "normalized_transform": { "reference_unit": "cx:bit_s", "scale": { "numerator": "1000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/kilobit-per-second", "verification": "not_assessed", "sources": [ { "id": "source:nist-binary-prefixes", "publisher": "NIST", "title": "Prefixes for binary multiples", "url": "https://physics.nist.gov/cuu/Units/binary.html", "edition": "IEC binary multiples and SI comparisons; web reference", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Decimal multiples and 8-bit byte; rate is per SI second" } ] }, { "unit_id": "cx:Mbit_s", "slug": "megabit-per-second", "name": "Megabit per second", "symbol": "Mbit/s", "code": "Mbit_s", "aliases": [], "quantity_kind": "information_rate", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:bit_s", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-binary-prefixes", "locator": "Decimal multiples and 8-bit byte; rate is per SI second" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "other" ], "family_id": "information_rate.bit_s", "usage_status": "current", "content_digest": "1b71fee477dd9460928cfeda7df9f78ece409bb334d7c06f93b270b9de07deba", "dependency_digest": "5996f00394d6190ee06f6d0abf353f94eb3be406e315866b280195ecd9fa5328", "dependency_ids": [ "cx:Mbit_s", "cx:bit", "cx:bit_s", "cx:s" ], "quantity_kinds": [ "information_rate" ], "kind_label": "Information rate", "dimension": [ 0, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Computing" ], "definition_lines": [ "1 Mbit/s = 1000000 bit/s." ], "normalized_transform": { "reference_unit": "cx:bit_s", "scale": { "numerator": "1000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/megabit-per-second", "verification": "not_assessed", "sources": [ { "id": "source:nist-binary-prefixes", "publisher": "NIST", "title": "Prefixes for binary multiples", "url": "https://physics.nist.gov/cuu/Units/binary.html", "edition": "IEC binary multiples and SI comparisons; web reference", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Decimal multiples and 8-bit byte; rate is per SI second" } ] }, { "unit_id": "cx:Gbit_s", "slug": "gigabit-per-second", "name": "Gigabit per second", "symbol": "Gbit/s", "code": "Gbit_s", "aliases": [], "quantity_kind": "information_rate", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:bit_s", "scale": { "numerator": "1000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-binary-prefixes", "locator": "Decimal multiples and 8-bit byte; rate is per SI second" } ], "scope": "Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.", "legacy_tools": [], "systems": [ "other" ], "family_id": "information_rate.bit_s", "usage_status": "current", "content_digest": "83dfba2e0e0c98dc90f1f893dfeba7f05999c5c3378124742edf28eacb668fc7", "dependency_digest": "079ae84ca8f32d283733ff06fdf462b92be8fcaf53cf018a5157cb23530defb0", "dependency_ids": [ "cx:Gbit_s", "cx:bit", "cx:bit_s", "cx:s" ], "quantity_kinds": [ "information_rate" ], "kind_label": "Information rate", "dimension": [ 0, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Computing" ], "definition_lines": [ "1 Gbit/s = 1000000000 bit/s." ], "normalized_transform": { "reference_unit": "cx:bit_s", "scale": { "numerator": "1000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/gigabit-per-second", "verification": "not_assessed", "sources": [ { "id": "source:nist-binary-prefixes", "publisher": "NIST", "title": "Prefixes for binary multiples", "url": "https://physics.nist.gov/cuu/Units/binary.html", "edition": "IEC binary multiples and SI comparisons; web reference", "checked_at": "2026-10-29", "reuse_note": "Factual definition relationships are independently encoded; no source prose or media redistributed.", "locator": "Decimal multiples and 8-bit byte; rate is per SI second" } ] }, { "unit_id": "cx:byte_s", "slug": "byte-per-second", "name": "Byte per second", "symbol": "B/s", "code": "byte_s", "aliases": [], "quantity_kind": "information_rate", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:bit_s", "scale": { "numerator": "8", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-binary-prefixes", "locator": "Decimal multiples and 8-bit byte; rate is per SI second" } ], "scope": "Definition metadata. 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Same dimension is insufficient to establish model compatibility; temperature factors, when present, are intervals.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "resistance_per_length.ohm_per_m", "usage_status": "current", "content_digest": "0b7be21dd4429411d051381a98edea88eb2183d90c6d9ff5c84cd63058e5a84b", "dependency_digest": "7819efa14b3e882cea81735e0b648ab1d128a6c45abeb0f3de68b3d517107647", "dependency_ids": [ "cx:A", "cx:J", "cx:N", "cx:V", "cx:W", "cx:kg", "cx:m", "cx:ohm", "cx:ohm_per_m", "cx:s" ], "quantity_kinds": [ "resistance_per_length" ], "kind_label": "Resistance per length", "dimension": [ 1, 1, -3, -2, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Electrical" ], "definition_lines": [ "1 Ω/m = (1 Ω)^1 × (1 m)^-1." ], "normalized_transform": { "reference_unit": "cx:ohm_per_m", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/ohm-per-metre", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: explicit coherent SI unit algebra; application semantics retained as a separate quantity kind" } ] }, { "unit_id": "cx:ohm_per_km", "slug": "ohm-per-kilometre", "name": "Ohm per kilometre", "symbol": "Ω/km", "code": "ohm_per_km", "aliases": [], "quantity_kind": "resistance_per_length", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:ohm_per_m", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "expression": { "cx:ohm": 1, "cx:km": -1 }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: explicit coherent SI unit algebra; application semantics retained as a separate quantity kind" } ], "scope": "Field-specific unit scale. 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Luminous flux/intensity/illuminance conversion still requires geometry; activity is not equivalent dose or cyclic frequency.", "legacy_tools": [], "systems": [ "other" ], "family_id": "illuminance.lx", "usage_status": "current", "expression": { "cx:lm": 1, "cx:ft2_i": -1 }, "content_digest": "464c8d5f894ba13417a181f9c476d1982b32d6380bccad461fce898d2a50164c", "dependency_digest": "551e315e5525a1e9cd40932dd9ca236044bacc1082f2bcc161fbcd223198350f", "dependency_ids": [ "cx:cd", "cx:fc", "cx:ft2_i", "cx:ft_i", "cx:lm", "cx:lx", "cx:m", "cx:m2", "cx:sr" ], "quantity_kinds": [ "illuminance" ], "kind_label": "Illuminance", "dimension": [ -2, 0, 0, 0, 0, 0, 1 ], "roles": [ "scalar" ], "domains": [ "Optics" ], "definition_lines": [ "1 fc = (1 lm)^1 × (1 ft²)^-1." ], "normalized_transform": { "reference_unit": "cx:lx", "scale": { "numerator": "1562500", "denominator": "145161" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/footcandle", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: footcandle; 1 lm per international ft²" } ] }, { "unit_id": "cx:Ci", "slug": "curie", "name": "Curie", "symbol": "Ci", "code": "Ci", "aliases": [], "quantity_kind": "radioactivity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:Bq", "scale": { "numerator": "37000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:nist-sp811-b8", "locator": "Appendix B.8: curie = 3.7e10 Bq exactly" } ], "scope": "Explicit unit scale. Luminous flux/intensity/illuminance conversion still requires geometry; activity is not equivalent dose or cyclic frequency.", "legacy_tools": [], "systems": [ "other" ], "family_id": "radioactivity.bq", "usage_status": "current", "content_digest": "fc923ce924644fb14bca1f8cb46079eb66a2e9a4b8d980ca2af01bfd1f7a090d", "dependency_digest": "a4c5d5243450493af5c5c7f2c78f7756558a5dc63a51e4b3b5a7e5d5d7a5a0b1", "dependency_ids": [ "cx:Bq", "cx:Ci", "cx:s" ], "quantity_kinds": [ "radioactivity" ], "kind_label": "Activity", "dimension": [ 0, 0, -1, 0, 0, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Physics" ], "definition_lines": [ "1 Ci = 37000000000 Bq." ], "normalized_transform": { "reference_unit": "cx:Bq", "scale": { "numerator": "37000000000", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/curie", "verification": "not_assessed", "sources": [ { "id": "source:nist-sp811-b8", "publisher": "NIST", "title": "NIST Guide to the SI, Appendix B.8", "url": "https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8", "edition": "SP 811 online conversion table accessed 2026-10-28", "checked_at": "2026-10-29", "reuse_note": "Exact definition is distinguished from rounded table entries; no media copied.", "locator": "Appendix B.8: curie = 3.7e10 Bq exactly" } ] }, { "unit_id": "cx:mcd", "slug": "millicandela", "name": "Millicandela", "symbol": "mcd", "code": "mcd", "aliases": [], "quantity_kind": "luminous_intensity", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:cd", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "SI Brochure Table 7: milli = 1e-3 applied to candela" } ], "scope": "Explicit unit scale. Luminous flux/intensity/illuminance conversion still requires geometry; activity is not equivalent dose or cyclic frequency.", "legacy_tools": [], "systems": [ "si_decimal" ], "family_id": "luminous_intensity.cd", "usage_status": "current", "content_digest": "36b403b31183d1072793503451b6c79e682af79cce0079a90a9de01a19aa1182", "dependency_digest": "4fbfc0af37423374ef062f2f061038fabfdc2f3cebacb84d295664d537204cb0", "dependency_ids": [ "cx:cd", "cx:mcd" ], "quantity_kinds": [ "luminous_intensity" ], "kind_label": "Luminous intensity", "dimension": [ 0, 0, 0, 0, 0, 0, 1 ], "roles": [ "scalar" ], "domains": [ "Optics" ], "definition_lines": [ "1 mcd = 0.001 cd." ], "normalized_transform": { "reference_unit": "cx:cd", "scale": { "numerator": "1", "denominator": "1000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/millicandela", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "SI Brochure Table 7: milli = 1e-3 applied to candela" } ] }, { "unit_id": "cx:lm_W", "slug": "lumen-per-watt", "name": "Lumen per watt", "symbol": "lm/W", "code": "lm_W", "aliases": [], "quantity_kind": "luminous_efficacy", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "reference", "reference_unit": "cx:lm_W", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Photometric luminous efficacy. Watt-to-lumen conversion requires an efficacy or spectral/photometric model; this unit does not imply a universal factor.", "legacy_tools": [], "systems": [ "si_coherent" ], "family_id": "luminous_efficacy.lm_w", "usage_status": "current", "expression": { "cx:lm": 1, "cx:W": -1 }, "content_digest": "ba03f52fb5f24b7413396de4d8f32e263dde4a7cce0597b7ff99ac96deb5640d", "dependency_digest": "3bbe93ec084587e7d44dbf556eae3c11879fd994285d44f5dc1ab98711955191", "dependency_ids": [ "cx:J", "cx:N", "cx:W", "cx:cd", "cx:kg", "cx:lm", "cx:lm_W", "cx:m", "cx:s", "cx:sr" ], "quantity_kinds": [ "luminous_efficacy" ], "kind_label": "Luminous efficacy", "dimension": [ -2, -1, 3, 0, 0, 0, 1 ], "roles": [ "scalar" ], "domains": [ "Optics", "Electrical" ], "definition_lines": [ "1 lm/W = (1 lm)^1 × (1 W)^-1." ], "normalized_transform": { "reference_unit": "cx:lm_W", "scale": { "numerator": "1", "denominator": "1" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/lumen-per-watt", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:ppm_K", "slug": "part-per-million-per-kelvin-difference", "name": "Part per million per kelvin difference", "symbol": "ppm/K", "code": "ppm_K", "aliases": [], "quantity_kind": "temperature_coefficient", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:per_K", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Temperature factors are differences (intervals), explicitly declared in expression_roles. Absolute temperature offsets do not participate. Definition metadata, not a claim that an existing calculator is migrated.", "legacy_tools": [], "systems": [ "other" ], "family_id": "temperature_coefficient.per_k", "usage_status": "current", "expression": { "cx:ppm": 1, "cx:K": -1 }, "expression_roles": { "cx:K": "interval" }, "content_digest": "0c470383c531cccf23e1ba7c8bceea16cd246499cfe0c6438600edb8012baab4", "dependency_digest": "1b8190a07db1f8a488bfaa691f37178fa9a19af9ca72b33cdb13b6d99debff95", "dependency_ids": [ "cx:K", "cx:one", "cx:per_K", "cx:ppm", "cx:ppm_K" ], "quantity_kinds": [ "temperature_coefficient" ], "kind_label": "Inverse temperature", "dimension": [ 0, 0, 0, 0, -1, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Thermal", "Electrical", "Mechanical" ], "definition_lines": [ "1 ppm/K = (1 ppm)^1 × (1 ΔK)^-1." ], "normalized_transform": { "reference_unit": "cx:per_K", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/part-per-million-per-kelvin-difference", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] }, { "unit_id": "cx:ppm_delta_degC", "slug": "part-per-million-per-celsius-difference", "name": "Part per million per Celsius difference", "symbol": "ppm/°C", "code": "ppm_delta_degC", "aliases": [], "quantity_kind": "temperature_coefficient", "owner_pack": "core.metrology", "revision": "1.0.0", "lifecycle": "candidate", "definition_exactness": "exact_definition", "transform": { "type": "linear", "reference_unit": "cx:per_K", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "source_refs": [ { "source_id": "source:bipm-si-9-v4.01", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ], "scope": "Temperature factors are differences (intervals), explicitly declared in expression_roles. Absolute temperature offsets do not participate. Definition metadata, not a claim that an existing calculator is migrated.", "legacy_tools": [], "systems": [ "other" ], "family_id": "temperature_coefficient.per_k", "usage_status": "current", "expression": { "cx:ppm": 1, "cx:degC": -1 }, "expression_roles": { "cx:degC": "interval" }, "content_digest": "33c8fcd6216e51f96d3228a398bc53a71e98fc7a9946a4d511247f394ce51a26", "dependency_digest": "f5065107e9bedd001c57755f16c3eaf9df83304eb6e3ec290f830b4b2b2c38c1", "dependency_ids": [ "cx:K", "cx:degC", "cx:one", "cx:per_K", "cx:ppm", "cx:ppm_delta_degC" ], "quantity_kinds": [ "temperature_coefficient" ], "kind_label": "Inverse temperature", "dimension": [ 0, 0, 0, 0, -1, 0, 0 ], "roles": [ "scalar" ], "domains": [ "Thermal", "Electrical", "Mechanical" ], "definition_lines": [ "1 ppm/°C = (1 ppm)^1 × (1 Δ°C)^-1." ], "normalized_transform": { "reference_unit": "cx:per_K", "scale": { "numerator": "1", "denominator": "1000000" }, "offset": { "numerator": "0", "denominator": "1" } }, "href": "/units/part-per-million-per-celsius-difference", "verification": "not_assessed", "sources": [ { "id": "source:bipm-si-9-v4.01", "publisher": "BIPM", "title": "The International System of Units (SI)", "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf/2d2b50bf-f2b4-9661-f402-5f9d66e4b507?download=true&t=1780410776583&version=7.0", "edition": "9th edition, version 4.01, June 2026", "checked_at": "2026-10-29", "reuse_note": "Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.", "locator": "Tables 4–7: coherent derived units, unit algebra and decimal prefixes" } ] } ], "lookup": { "unit_id": { "cx:m": [ "cx:m" ], "cx:cm": [ "cx:cm" ], "cx:mm": [ "cx:mm" ], "cx:ft_i": [ "cx:ft_i" ], "cx:in_i": [ "cx:in_i" ], "cx:kg": [ "cx:kg" ], "cx:g": [ "cx:g" ], "cx:s": [ "cx:s" ], "cx:min": [ "cx:min" ], "cx:h": [ "cx:h" ], "cx:K": [ "cx:K" ], "cx:degC": [ "cx:degC" ], "cx:degF": [ "cx:degF" ], "cx:m3": [ "cx:m3" ], "cx:L": [ "cx:L" ], "cx:mL": [ "cx:mL" ], 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"cx:lx" ], "cx:dm": [ "cx:dm" ], "cx:pm": [ "cx:pm" ], "cx:ns": [ "cx:ns" ], "cx:ps": [ "cx:ps" ], "cx:GW": [ "cx:GW" ], "cx:uW": [ "cx:uW" ], "cx:MJ": [ "cx:MJ" ], "cx:GJ": [ "cx:GJ" ], "cx:MWh": [ "cx:MWh" ], "cx:THz": [ "cx:THz" ], "cx:uV": [ "cx:uV" ], "cx:nV": [ "cx:nV" ], "cx:MV": [ "cx:MV" ], "cx:GV": [ "cx:GV" ], "cx:mC": [ "cx:mC" ], "cx:uC": [ "cx:uC" ], "cx:nC": [ "cx:nC" ], "cx:pC": [ "cx:pC" ], "cx:nA": [ "cx:nA" ], "cx:pA": [ "cx:pA" ], "cx:kA": [ "cx:kA" ], "cx:uohm": [ "cx:uohm" ], "cx:Gohm": [ "cx:Gohm" ], "cx:mF": [ "cx:mF" ], "cx:fF": [ "cx:fF" ], "cx:nH": [ "cx:nH" ], "cx:pH": [ "cx:pH" ], "cx:uT": [ "cx:uT" ], "cx:nT": [ "cx:nT" ], "cx:hPa": [ "cx:hPa" ], "cx:GPa": [ "cx:GPa" ], "cx:mN": [ "cx:mN" ], "cx:MN": [ "cx:MN" ], "cx:umol": [ "cx:umol" ], "cx:nmol": [ "cx:nmol" ], "cx:klm": [ "cx:klm" ], "cx:klx": [ "cx:klx" ], "cx:nmi": [ "cx:nmi" ], "cx:angstrom": [ "cx:angstrom" ], "cx:au": [ "cx:au" ], "cx:mil": [ "cx:mil" ], "cx:oz_av": [ "cx:oz_av" ], "cx:st": [ "cx:st" ], "cx:grain": [ "cx:grain" ], "cx:oz_tr": [ "cx:oz_tr" ], "cx:ton_us": [ "cx:ton_us" ], "cx:ton_uk": [ "cx:ton_uk" ], "cx:week": [ "cx:week" ], "cx:ft2_i": [ "cx:ft2_i" ], "cx:in2_i": [ "cx:in2_i" ], "cx:ft3_i": [ "cx:ft3_i" ], "cx:in3_i": [ "cx:in3_i" ], "cx:yd3_i": [ "cx:yd3_i" ], "cx:gal_us": [ "cx:gal_us" ], "cx:qt_us": [ "cx:qt_us" ], "cx:pt_us": [ "cx:pt_us" ], "cx:floz_us": [ "cx:floz_us" ], "cx:gal_imp": [ "cx:gal_imp" ], "cx:qt_imp": [ "cx:qt_imp" ], "cx:pt_imp": [ "cx:pt_imp" ], "cx:floz_imp": [ "cx:floz_imp" ], "cx:mph": [ "cx:mph" ], "cx:ft_s": [ "cx:ft_s" ], "cx:kn": [ "cx:kn" ], "cx:g0": [ "cx:g0" ], "cx:Gal": [ "cx:Gal" ], "cx:lbf": [ "cx:lbf" ], "cx:kgf": [ "cx:kgf" ], "cx:ozf": [ "cx:ozf" ], "cx:kip": [ "cx:kip" ], "cx:dyn": [ "cx:dyn" ], "cx:psi": [ "cx:psi" ], "cx:ksi": [ "cx:ksi" ], "cx:psf": [ "cx:psf" ], "cx:mbar": [ "cx:mbar" ], "cx:cal_th": [ "cx:cal_th" ], "cx:cal_IT": [ "cx:cal_IT" ], "cx:kcal_th": [ "cx:kcal_th" ], "cx:kcal_IT": [ "cx:kcal_IT" ], "cx:Btu_IT": [ "cx:Btu_IT" ], "cx:eV": [ "cx:eV" ], "cx:keV": [ "cx:keV" ], "cx:MeV": [ "cx:MeV" ], "cx:GeV": [ "cx:GeV" ], "cx:elementary_charge": [ "cx:elementary_charge" ], "cx:hp_mech": [ "cx:hp_mech" ], "cx:Btu_IT_h": [ "cx:Btu_IT_h" ], "cx:TR_IT": [ "cx:TR_IT" ], "cx:m3_s": [ "cx:m3_s" ], "cx:kg_s": [ "cx:kg_s" ], "cx:kg_m3": [ "cx:kg_m3" ], "cx:mol_m3": [ "cx:mol_m3" ], "cx:kg_mol": [ "cx:kg_mol" ], "cx:Pa_s": [ "cx:Pa_s" ], "cx:m2_s": [ "cx:m2_s" ], "cx:N_m_surface": [ "cx:N_m_surface" ], "cx:W_m_K": [ "cx:W_m_K" ], "cx:W_m2_K": [ "cx:W_m2_K" ], "cx:K_W": [ "cx:K_W" ], "cx:J_kg_K": [ "cx:J_kg_K" ], "cx:J_K": [ "cx:J_K" ], "cx:J_kg": [ "cx:J_kg" ], "cx:per_K": [ "cx:per_K" ], "cx:S": [ "cx:S" ], "cx:ohm_m": [ "cx:ohm_m" ], "cx:S_m": [ "cx:S_m" ], "cx:VA": [ "cx:VA" ], "cx:var": [ "cx:var" ], "cx:m4": [ "cx:m4" ], "cx:kg_m_s": [ "cx:kg_m_s" ], "cx:kg_m2": [ "cx:kg_m2" ], "cx:W_m2": [ "cx:W_m2" ], "cx:cd_m2": [ "cx:cd_m2" ], "cx:Bq": [ "cx:Bq" ], "cx:Gy": [ "cx:Gy" ], "cx:Sv": [ "cx:Sv" ], "cx:kat": [ "cx:kat" ], "cx:L_s": [ "cx:L_s" ], "cx:L_min": [ "cx:L_min" ], "cx:mL_min": [ "cx:mL_min" ], "cx:m3_h": [ "cx:m3_h" ], "cx:gpm_us": [ "cx:gpm_us" ], "cx:cfm": [ "cx:cfm" ], "cx:kg_h": [ "cx:kg_h" ], "cx:g_s": [ "cx:g_s" ], "cx:g_cm3": [ "cx:g_cm3" ], "cx:lb_ft3": [ "cx:lb_ft3" ], "cx:g_L": [ "cx:g_L" ], "cx:mg_L": [ "cx:mg_L" ], "cx:ug_L": [ "cx:ug_L" ], "cx:mol_L": [ "cx:mol_L" ], "cx:mmol_L": [ "cx:mmol_L" ], "cx:umol_L": [ "cx:umol_L" ], "cx:g_mol": [ "cx:g_mol" ], "cx:mPa_s": [ "cx:mPa_s" ], "cx:mm2_s": [ "cx:mm2_s" ], "cx:mN_m": [ "cx:mN_m" ], "cx:mW_m_K": [ "cx:mW_m_K" ], "cx:kJ_kg_K": [ "cx:kJ_kg_K" ], "cx:kJ_K": [ "cx:kJ_K" ], "cx:kJ_kg": [ "cx:kJ_kg" ], "cx:delta_degC_W": [ "cx:delta_degC_W" ], "cx:per_delta_degC": [ "cx:per_delta_degC" ], "cx:ohm_cm": [ "cx:ohm_cm" ], "cx:S_cm": [ "cx:S_cm" ], "cx:mm4": [ "cx:mm4" ], "cx:cm4": [ "cx:cm4" ], "cx:in4": [ "cx:in4" ], "cx:ft4": [ "cx:ft4" ], "cx:mm3": [ "cx:mm3" ], "cx:lbf_ft": [ "cx:lbf_ft" ], "cx:lbf_in": [ "cx:lbf_in" ], "cx:oz_ft2": [ "cx:oz_ft2" ], "cx:W_cm2": [ "cx:W_cm2" ], "cx:kW_m2": [ "cx:kW_m2" ], "cx:uPa_s": [ "cx:uPa_s" ], "cx:P": [ "cx:P" ], "cx:cP": [ "cx:cP" ], "cx:St": [ "cx:St" ], "cx:cSt": [ "cx:cSt" ], "cx:mS": [ "cx:mS" ], "cx:uS": [ "cx:uS" ], "cx:nS": [ "cx:nS" ], "cx:uS_cm": [ "cx:uS_cm" ], "cx:mS_cm": [ "cx:mS_cm" ], "cx:kVA": [ "cx:kVA" ], "cx:MVA": [ "cx:MVA" ], "cx:kvar": [ "cx:kvar" ], "cx:Mvar": [ "cx:Mvar" ], "cx:kBq": [ "cx:kBq" ], "cx:MBq": [ "cx:MBq" ], "cx:mGy": [ "cx:mGy" ], "cx:mSv": [ "cx:mSv" ], "cx:uSv": [ "cx:uSv" ], "cx:G": [ "cx:G" ], "cx:bit": [ "cx:bit" ], "cx:byte": [ "cx:byte" ], "cx:kB": [ "cx:kB" ], "cx:MB": [ "cx:MB" ], "cx:GB": [ "cx:GB" ], "cx:TB": [ "cx:TB" ], "cx:KiB": [ "cx:KiB" ], "cx:MiB": [ "cx:MiB" ], "cx:GiB": [ "cx:GiB" ], "cx:TiB": [ "cx:TiB" ], "cx:bit_s": [ "cx:bit_s" ], "cx:kbit_s": [ "cx:kbit_s" ], "cx:Mbit_s": [ "cx:Mbit_s" ], "cx:Gbit_s": [ "cx:Gbit_s" ], "cx:byte_s": [ "cx:byte_s" ], "cx:per_s": [ "cx:per_s" ], "cx:V_K": [ "cx:V_K" ], "cx:V_delta_degC": [ "cx:V_delta_degC" ], "cx:A_V2": [ "cx:A_V2" ], "cx:ohm_per_m": [ "cx:ohm_per_m" ], "cx:ohm_per_km": [ "cx:ohm_per_km" ], "cx:fc": [ "cx:fc" ], "cx:Ci": [ "cx:Ci" ], "cx:mcd": [ "cx:mcd" ], "cx:lm_W": [ "cx:lm_W" ], "cx:ppm_K": [ "cx:ppm_K" ], "cx:ppm_delta_degC": [ "cx:ppm_delta_degC" ] }, "code": { "m": [ "cx:m" ], "cm": [ "cx:cm" ], "mm": [ "cx:mm" ], "ft_i": [ "cx:ft_i" ], "in_i": [ "cx:in_i" ], "kg": [ "cx:kg" ], "g": [ "cx:g" ], "s": [ "cx:s" ], "min": [ "cx:min" ], "h": [ "cx:h" ], "K": [ "cx:K" ], "degC": [ "cx:degC" ], "degF": [ "cx:degF" ], "m3": [ "cx:m3" ], "L": [ "cx:L" ], "mL": [ "cx:mL" ], "km": [ "cx:km" ], "um": [ "cx:um" ], "nm": [ "cx:nm" ], "yd_i": [ "cx:yd_i" ], "mi_i": [ "cx:mi_i" ], "ft_us": [ "cx:ft_us" ], "mg": [ "cx:mg" ], "ug": [ "cx:ug" ], "t": [ "cx:t" ], "lb_av": [ "cx:lb_av" ], "ms": [ "cx:ms" ], "us": [ "cx:us" ], "d": [ "cx:d" ], "degR": [ "cx:degR" ], "rad": [ "cx:rad" ], "deg": [ "cx:deg" ], "arcmin": [ "cx:arcmin" ], "arcsec": [ "cx:arcsec" ], "turn": [ "cx:turn" ], "gon": [ "cx:gon" ], "mrad": [ "cx:mrad" ], "sr": [ "cx:sr" ], "one": [ "cx:one" ], "percent": [ "cx:percent" ], "ppm": [ "cx:ppm" ], "m2": [ "cx:m2" ], "cm2": [ "cx:cm2" ], "mm2": [ "cx:mm2" ], "km2": [ "cx:km2" ], "ha": [ "cx:ha" ], "cm3": [ "cx:cm3" ], "uL": [ "cx:uL" ], "Hz": [ "cx:Hz" ], "kHz": [ "cx:kHz" ], "MHz": [ "cx:MHz" ], "GHz": [ "cx:GHz" ], "rad_s": [ "cx:rad_s" ], "rpm": [ "cx:rpm" ], "m_s": [ "cx:m_s" ], "km_h": [ "cx:km_h" ], "m_s2": [ "cx:m_s2" ], "N": [ "cx:N" ], "kN": [ "cx:kN" ], "Pa": [ "cx:Pa" ], "mPa": [ "cx:mPa" ], "kPa": [ "cx:kPa" ], "MPa": [ "cx:MPa" ], "bar": [ "cx:bar" ], "atm": [ "cx:atm" ], "J": [ "cx:J" ], "kJ": [ "cx:kJ" ], "Wh": [ "cx:Wh" ], "kWh": [ "cx:kWh" ], "N_m": [ "cx:N_m" ], "W": [ "cx:W" ], "mW": [ "cx:mW" ], "kW": [ "cx:kW" ], "MW": [ "cx:MW" ], "A": [ "cx:A" ], "mA": [ "cx:mA" ], "uA": [ "cx:uA" ], "C": [ "cx:C" ], "Ah": [ "cx:Ah" ], "mAh": [ "cx:mAh" ], "V": [ "cx:V" ], "mV": [ "cx:mV" ], "kV": [ "cx:kV" ], "ohm": [ "cx:ohm" ], "mohm": [ "cx:mohm" ], "kohm": [ "cx:kohm" ], "Mohm": [ "cx:Mohm" ], "F": [ "cx:F" ], "uF": [ "cx:uF" ], "nF": [ "cx:nF" ], "pF": [ "cx:pF" ], "H": [ "cx:H" ], "mH": [ "cx:mH" ], "uH": [ "cx:uH" ], "Wb": [ "cx:Wb" ], "T": [ "cx:T" ], "mT": [ "cx:mT" ], "mol": [ "cx:mol" ], "mmol": [ "cx:mmol" ], "cd": [ "cx:cd" ], "lm": [ "cx:lm" ], "lx": [ "cx:lx" ], "dm": [ "cx:dm" ], "pm": [ "cx:pm" ], "ns": [ "cx:ns" ], "ps": [ "cx:ps" ], "GW": [ "cx:GW" ], "uW": [ "cx:uW" ], "MJ": [ "cx:MJ" ], "GJ": [ "cx:GJ" ], "MWh": [ "cx:MWh" ], "THz": [ "cx:THz" ], "uV": [ "cx:uV" ], "nV": [ "cx:nV" ], "MV": [ "cx:MV" ], "GV": [ "cx:GV" ], "mC": [ "cx:mC" ], "uC": [ "cx:uC" ], "nC": [ "cx:nC" ], "pC": [ "cx:pC" ], "nA": [ "cx:nA" ], "pA": [ "cx:pA" ], "kA": [ "cx:kA" ], "uohm": [ "cx:uohm" ], "Gohm": [ "cx:Gohm" ], "mF": [ "cx:mF" ], "fF": [ "cx:fF" ], "nH": [ "cx:nH" ], "pH": [ "cx:pH" ], "uT": [ "cx:uT" ], "nT": [ "cx:nT" ], "hPa": [ "cx:hPa" ], "GPa": [ "cx:GPa" ], "mN": [ "cx:mN" ], "MN": [ "cx:MN" ], "umol": [ "cx:umol" ], "nmol": [ "cx:nmol" ], "klm": [ "cx:klm" ], "klx": [ "cx:klx" ], "nmi": [ "cx:nmi" ], "angstrom": [ "cx:angstrom" ], "au": [ "cx:au" ], "mil": [ "cx:mil" ], "oz_av": [ "cx:oz_av" ], "st": [ "cx:st" ], "grain": [ "cx:grain" ], "oz_tr": [ "cx:oz_tr" ], "ton_us": [ "cx:ton_us" ], "ton_uk": [ "cx:ton_uk" ], "week": [ "cx:week" ], "ft2_i": [ "cx:ft2_i" ], "in2_i": [ "cx:in2_i" ], "ft3_i": [ "cx:ft3_i" ], "in3_i": [ "cx:in3_i" ], "yd3_i": [ "cx:yd3_i" ], "gal_us": [ "cx:gal_us" ], "qt_us": [ "cx:qt_us" ], "pt_us": [ "cx:pt_us" ], "floz_us": [ "cx:floz_us" ], "gal_imp": [ "cx:gal_imp" ], "qt_imp": [ "cx:qt_imp" ], "pt_imp": [ "cx:pt_imp" ], "floz_imp": [ "cx:floz_imp" ], "mph": [ "cx:mph" ], "ft_s": [ "cx:ft_s" ], "kn": [ "cx:kn" ], "g0": [ "cx:g0" ], "Gal": [ "cx:Gal" ], "lbf": [ "cx:lbf" ], "kgf": [ "cx:kgf" ], "ozf": [ "cx:ozf" ], "kip": [ "cx:kip" ], "dyn": [ "cx:dyn" ], "psi": [ "cx:psi" ], "ksi": [ "cx:ksi" ], "psf": [ "cx:psf" ], "mbar": [ "cx:mbar" ], "cal_th": [ "cx:cal_th" ], "cal_IT": [ "cx:cal_IT" ], "kcal_th": [ "cx:kcal_th" ], "kcal_IT": [ "cx:kcal_IT" ], "Btu_IT": [ "cx:Btu_IT" ], "eV": [ "cx:eV" ], "keV": [ "cx:keV" ], "MeV": [ "cx:MeV" ], "GeV": [ "cx:GeV" ], "elementary_charge": [ "cx:elementary_charge" ], "hp_mech": [ "cx:hp_mech" ], "Btu_IT_h": [ "cx:Btu_IT_h" ], "TR_IT": [ "cx:TR_IT" ], "m3_s": [ "cx:m3_s" ], "kg_s": [ "cx:kg_s" ], "kg_m3": [ "cx:kg_m3" ], "mol_m3": [ "cx:mol_m3" ], "kg_mol": [ "cx:kg_mol" ], "Pa_s": [ "cx:Pa_s" ], "m2_s": [ "cx:m2_s" ], "N_m_surface": [ "cx:N_m_surface" ], "W_m_K": [ "cx:W_m_K" ], "W_m2_K": [ "cx:W_m2_K" ], "K_W": [ "cx:K_W" ], "J_kg_K": [ "cx:J_kg_K" ], "J_K": [ "cx:J_K" ], "J_kg": [ "cx:J_kg" ], "per_K": [ "cx:per_K" ], "S": [ "cx:S" ], "ohm_m": [ "cx:ohm_m" ], "S_m": [ "cx:S_m" ], "VA": [ "cx:VA" ], "var": [ "cx:var" ], "m4": [ "cx:m4" ], "kg_m_s": [ "cx:kg_m_s" ], "kg_m2": [ "cx:kg_m2" ], "W_m2": [ "cx:W_m2" ], "cd_m2": [ "cx:cd_m2" ], "Bq": [ "cx:Bq" ], "Gy": [ "cx:Gy" ], "Sv": [ "cx:Sv" ], "kat": [ "cx:kat" ], "L_s": [ "cx:L_s" ], "L_min": [ "cx:L_min" ], "mL_min": [ "cx:mL_min" ], "m3_h": [ "cx:m3_h" ], "gpm_us": [ "cx:gpm_us" ], "cfm": [ "cx:cfm" ], "kg_h": [ "cx:kg_h" ], "g_s": [ "cx:g_s" ], "g_cm3": [ "cx:g_cm3" ], "lb_ft3": [ "cx:lb_ft3" ], "g_L": [ "cx:g_L" ], "mg_L": [ "cx:mg_L" ], "ug_L": [ "cx:ug_L" ], "mol_L": [ "cx:mol_L" ], "mmol_L": [ "cx:mmol_L" ], "umol_L": [ "cx:umol_L" ], "g_mol": [ "cx:g_mol" ], "mPa_s": [ "cx:mPa_s" ], "mm2_s": [ "cx:mm2_s" ], "mN_m": [ "cx:mN_m" ], "mW_m_K": [ "cx:mW_m_K" ], "kJ_kg_K": [ "cx:kJ_kg_K" ], "kJ_K": [ "cx:kJ_K" ], "kJ_kg": [ "cx:kJ_kg" ], "delta_degC_W": [ "cx:delta_degC_W" ], "per_delta_degC": [ "cx:per_delta_degC" ], "ohm_cm": [ "cx:ohm_cm" ], "S_cm": [ "cx:S_cm" ], "mm4": [ "cx:mm4" ], "cm4": [ "cx:cm4" ], "in4": [ "cx:in4" ], "ft4": [ "cx:ft4" ], "mm3": [ "cx:mm3" ], "lbf_ft": [ "cx:lbf_ft" ], "lbf_in": [ "cx:lbf_in" ], "oz_ft2": [ "cx:oz_ft2" ], "W_cm2": [ "cx:W_cm2" ], "kW_m2": [ "cx:kW_m2" ], "uPa_s": [ "cx:uPa_s" ], "P": [ "cx:P" ], "cP": [ "cx:cP" ], "St": [ "cx:St" ], "cSt": [ "cx:cSt" ], "mS": [ "cx:mS" ], "uS": [ "cx:uS" ], "nS": [ "cx:nS" ], "uS_cm": [ "cx:uS_cm" ], "mS_cm": [ "cx:mS_cm" ], "kVA": [ "cx:kVA" ], "MVA": [ "cx:MVA" ], "kvar": [ "cx:kvar" ], "Mvar": [ "cx:Mvar" ], "kBq": [ "cx:kBq" ], "MBq": [ "cx:MBq" ], "mGy": [ "cx:mGy" ], "mSv": [ "cx:mSv" ], "uSv": [ "cx:uSv" ], "G": [ "cx:G" ], "bit": [ "cx:bit" ], "byte": [ "cx:byte" ], "kB": [ "cx:kB" ], "MB": [ "cx:MB" ], "GB": [ "cx:GB" ], "TB": [ "cx:TB" ], "KiB": [ "cx:KiB" ], "MiB": [ "cx:MiB" ], "GiB": [ "cx:GiB" ], "TiB": [ "cx:TiB" ], "bit_s": [ "cx:bit_s" ], "kbit_s": [ "cx:kbit_s" ], "Mbit_s": [ "cx:Mbit_s" ], "Gbit_s": [ "cx:Gbit_s" ], "byte_s": [ "cx:byte_s" ], "per_s": [ "cx:per_s" ], "V_K": [ "cx:V_K" ], "V_delta_degC": [ "cx:V_delta_degC" ], "A_V2": [ "cx:A_V2" ], "ohm_per_m": [ "cx:ohm_per_m" ], "ohm_per_km": [ "cx:ohm_per_km" ], "fc": [ "cx:fc" ], "Ci": [ "cx:Ci" ], "mcd": [ "cx:mcd" ], "lm_W": [ "cx:lm_W" ], "ppm_K": [ "cx:ppm_K" ], "ppm_delta_degC": [ "cx:ppm_delta_degC" ] }, "symbol": { "1": [ "cx:one" ], "m": [ "cx:m" ], "cm": [ "cx:cm" ], "mm": [ "cx:mm" ], "ft": [ "cx:ft_i", "cx:ft_us" ], "in": [ "cx:in_i" ], "kg": [ "cx:kg" ], "g": [ "cx:g" ], "s": [ "cx:s" ], "min": [ "cx:min" ], "h": [ "cx:h" ], "K": [ "cx:K" ], "°C": [ "cx:degC" ], "°F": [ "cx:degF" ], "m³": [ "cx:m3" ], "L": [ "cx:L" ], "mL": [ "cx:mL" ], "km": [ "cx:km" ], "µm": [ "cx:um" ], "nm": [ "cx:nm" ], "yd": [ "cx:yd_i" ], "mi": [ "cx:mi_i" ], "mg": [ "cx:mg" ], "µg": [ "cx:ug" ], "t": [ "cx:t" ], "lb": [ "cx:lb_av" ], "ms": [ "cx:ms" ], "µs": [ "cx:us" ], "d": [ "cx:d" ], "°R": [ "cx:degR" ], "rad": [ "cx:rad" ], "°": [ "cx:deg" ], "′": [ "cx:arcmin" ], "″": [ "cx:arcsec" ], "turn": [ "cx:turn" ], "gon": [ "cx:gon" ], "mrad": [ "cx:mrad" ], "sr": [ "cx:sr" ], "%": [ "cx:percent" ], "ppm": [ "cx:ppm" ], "m²": [ "cx:m2" ], "cm²": [ "cx:cm2" ], "mm²": [ "cx:mm2" ], "km²": [ "cx:km2" ], "ha": [ "cx:ha" ], "cm³": [ "cx:cm3" ], "µL": [ "cx:uL" ], "Hz": [ "cx:Hz" ], "kHz": [ "cx:kHz" ], "MHz": [ "cx:MHz" ], "GHz": [ "cx:GHz" ], "rad/s": [ "cx:rad_s" ], "rpm": [ "cx:rpm" ], "m/s": [ "cx:m_s" ], "km/h": [ "cx:km_h" ], "m/s²": [ "cx:m_s2" ], "N": [ "cx:N" ], "kN": [ "cx:kN" ], "Pa": [ "cx:Pa" ], "mPa": [ "cx:mPa" ], "kPa": [ "cx:kPa" ], "MPa": [ "cx:MPa" ], "bar": [ "cx:bar" ], "atm": [ "cx:atm" ], "J": [ "cx:J" ], "kJ": [ "cx:kJ" ], "Wh": [ "cx:Wh" ], "kWh": [ "cx:kWh" ], "N·m": [ "cx:N_m" ], "W": [ "cx:W" ], "mW": [ "cx:mW" ], "kW": [ "cx:kW" ], "MW": [ "cx:MW" ], "A": [ "cx:A" ], "mA": [ "cx:mA" ], "µA": [ "cx:uA" ], "C": [ "cx:C" ], "Ah": [ "cx:Ah" ], "mAh": [ "cx:mAh" ], "V": [ "cx:V" ], "mV": [ "cx:mV" ], "kV": [ "cx:kV" ], "Ω": [ "cx:ohm" ], "mΩ": [ "cx:mohm" ], "kΩ": [ "cx:kohm" ], "MΩ": [ "cx:Mohm" ], "F": [ "cx:F" ], "µF": [ "cx:uF" ], "nF": [ "cx:nF" ], "pF": [ "cx:pF" ], "H": [ "cx:H" ], "mH": [ "cx:mH" ], "µH": [ "cx:uH" ], "Wb": [ "cx:Wb" ], "T": [ "cx:T" ], "mT": [ "cx:mT" ], "mol": [ "cx:mol" ], "mmol": [ "cx:mmol" ], "cd": [ "cx:cd" ], "lm": [ "cx:lm" ], "lx": [ "cx:lx" ], "dm": [ "cx:dm" ], "pm": [ "cx:pm" ], "ns": [ "cx:ns" ], "ps": [ "cx:ps" ], "GW": [ "cx:GW" ], "µW": [ "cx:uW" ], "MJ": [ "cx:MJ" ], "GJ": [ "cx:GJ" ], "MWh": [ "cx:MWh" ], "THz": [ "cx:THz" ], "µV": [ "cx:uV" ], "nV": [ "cx:nV" ], "MV": [ "cx:MV" ], "GV": [ "cx:GV" ], "mC": [ "cx:mC" ], "µC": [ "cx:uC" ], "nC": [ "cx:nC" ], "pC": [ "cx:pC" ], "nA": [ "cx:nA" ], "pA": [ "cx:pA" ], "kA": [ "cx:kA" ], "µΩ": [ "cx:uohm" ], "GΩ": [ "cx:Gohm" ], "mF": [ "cx:mF" ], "fF": [ "cx:fF" ], "nH": [ "cx:nH" ], "pH": [ "cx:pH" ], "µT": [ "cx:uT" ], "nT": [ "cx:nT" ], "hPa": [ "cx:hPa" ], "GPa": [ "cx:GPa" ], "mN": [ "cx:mN" ], "MN": [ "cx:MN" ], "µmol": [ "cx:umol" ], "nmol": [ "cx:nmol" ], "klm": [ "cx:klm" ], "klx": [ "cx:klx" ], "nmi": [ "cx:nmi" ], "Å": [ "cx:angstrom" ], "au": [ "cx:au" ], "mil": [ "cx:mil" ], "oz": [ "cx:oz_av", "cx:oz_tr" ], "st": [ "cx:st" ], "gr": [ "cx:grain" ], "ton": [ "cx:ton_uk", "cx:ton_us" ], "wk": [ "cx:week" ], "ft²": [ "cx:ft2_i" ], "in²": [ "cx:in2_i" ], "ft³": [ "cx:ft3_i" ], "in³": [ "cx:in3_i" ], "yd³": [ "cx:yd3_i" ], "gal": [ "cx:gal_imp", "cx:gal_us" ], "qt": [ "cx:qt_imp", "cx:qt_us" ], "pt": [ "cx:pt_imp", "cx:pt_us" ], "fl oz": [ "cx:floz_imp", "cx:floz_us" ], "mph": [ "cx:mph" ], "ft/s": [ "cx:ft_s" ], "kn": [ "cx:kn" ], "g₀": [ "cx:g0" ], "Gal": [ "cx:Gal" ], "lbf": [ "cx:lbf" ], "kgf": [ "cx:kgf" ], "ozf": [ "cx:ozf" ], "kip": [ "cx:kip" ], "dyn": [ "cx:dyn" ], "psi": [ "cx:psi" ], "ksi": [ "cx:ksi" ], "psf": [ "cx:psf" ], "mbar": [ "cx:mbar" ], "cal": [ "cx:cal_IT", "cx:cal_th" ], "kcal": [ "cx:kcal_IT", "cx:kcal_th" ], "BTU": [ "cx:Btu_IT" ], "eV": [ "cx:eV" ], "keV": [ "cx:keV" ], "MeV": [ "cx:MeV" ], "GeV": [ "cx:GeV" ], "e": [ "cx:elementary_charge" ], "hp": [ "cx:hp_mech" ], "BTU/h": [ "cx:Btu_IT_h" ], "TR": [ "cx:TR_IT" ], "m³/s": [ "cx:m3_s" ], "kg/s": [ "cx:kg_s" ], "kg/m³": [ "cx:kg_m3" ], "mol/m³": [ "cx:mol_m3" ], "kg/mol": [ "cx:kg_mol" ], "Pa·s": [ "cx:Pa_s" ], "m²/s": [ "cx:m2_s" ], "N/m": [ "cx:N_m_surface" ], "W/(m·K)": [ "cx:W_m_K" ], "W/(m²·K)": [ "cx:W_m2_K" ], "K/W": [ "cx:K_W" ], "J/(kg·K)": [ "cx:J_kg_K" ], "J/K": [ "cx:J_K" ], "J/kg": [ "cx:J_kg" ], "K⁻¹": [ "cx:per_K" ], "S": [ "cx:S" ], "Ω·m": [ "cx:ohm_m" ], "S/m": [ "cx:S_m" ], "VA": [ "cx:VA" ], "var": [ "cx:var" ], "m⁴": [ "cx:m4" ], "kg·m/s": [ "cx:kg_m_s" ], "kg/m²": [ "cx:kg_m2" ], "W/m²": [ "cx:W_m2" ], "cd/m²": [ "cx:cd_m2" ], "Bq": [ "cx:Bq" ], "Gy": [ "cx:Gy" ], "Sv": [ "cx:Sv" ], "kat": [ "cx:kat" ], "L/s": [ "cx:L_s" ], "L/min": [ "cx:L_min" ], "mL/min": [ "cx:mL_min" ], "m³/h": [ "cx:m3_h" ], "gpm": [ "cx:gpm_us" ], "cfm": [ "cx:cfm" ], "kg/h": [ "cx:kg_h" ], "g/s": [ "cx:g_s" ], "g/cm³": [ "cx:g_cm3" ], "lb/ft³": [ "cx:lb_ft3" ], "g/L": [ "cx:g_L" ], "mg/L": [ "cx:mg_L" ], "µg/L": [ "cx:ug_L" ], "mol/L": [ "cx:mol_L" ], "mmol/L": [ "cx:mmol_L" ], "µmol/L": [ "cx:umol_L" ], "g/mol": [ "cx:g_mol" ], "mPa·s": [ "cx:mPa_s" ], "mm²/s": [ "cx:mm2_s" ], "mN/m": [ "cx:mN_m" ], "mW/(m·K)": [ "cx:mW_m_K" ], "kJ/(kg·K)": [ "cx:kJ_kg_K" ], "kJ/K": [ "cx:kJ_K" ], "kJ/kg": [ "cx:kJ_kg" ], "°C/W": [ "cx:delta_degC_W" ], "/°C": [ "cx:per_delta_degC" ], "Ω·cm": [ "cx:ohm_cm" ], "S/cm": [ "cx:S_cm" ], "mm⁴": [ "cx:mm4" ], "cm⁴": [ "cx:cm4" ], "in⁴": [ "cx:in4" ], "ft⁴": [ "cx:ft4" ], "mm³": [ "cx:mm3" ], "lbf·ft": [ "cx:lbf_ft" ], "lbf·in": [ "cx:lbf_in" ], "oz/ft²": [ "cx:oz_ft2" ], "W/cm²": [ "cx:W_cm2" ], "kW/m²": [ "cx:kW_m2" ], "µPa·s": [ "cx:uPa_s" ], "P": [ "cx:P" ], "cP": [ "cx:cP" ], "St": [ "cx:St" ], "cSt": [ "cx:cSt" ], "mS": [ "cx:mS" ], "µS": [ "cx:uS" ], "nS": [ "cx:nS" ], "µS/cm": [ "cx:uS_cm" ], "mS/cm": [ "cx:mS_cm" ], "kVA": [ "cx:kVA" ], "MVA": [ "cx:MVA" ], "kvar": [ "cx:kvar" ], "Mvar": [ "cx:Mvar" ], "kBq": [ "cx:kBq" ], "MBq": [ "cx:MBq" ], "mGy": [ "cx:mGy" ], "mSv": [ "cx:mSv" ], "µSv": [ "cx:uSv" ], "G": [ "cx:G" ], "bit": [ "cx:bit" ], "B": [ "cx:byte" ], "kB": [ "cx:kB" ], "MB": [ "cx:MB" ], "GB": [ "cx:GB" ], "TB": [ "cx:TB" ], "KiB": [ "cx:KiB" ], "MiB": [ "cx:MiB" ], "GiB": [ "cx:GiB" ], "TiB": [ "cx:TiB" ], "bit/s": [ "cx:bit_s" ], "kbit/s": [ "cx:kbit_s" ], "Mbit/s": [ "cx:Mbit_s" ], "Gbit/s": [ "cx:Gbit_s" ], "B/s": [ "cx:byte_s" ], "s⁻¹": [ "cx:per_s" ], "V/K": [ "cx:V_K" ], "V/°C": [ "cx:V_delta_degC" ], "A/V²": [ "cx:A_V2" ], "Ω/m": [ "cx:ohm_per_m" ], "Ω/km": [ "cx:ohm_per_km" ], "fc": [ "cx:fc" ], "Ci": [ "cx:Ci" ], "mcd": [ "cx:mcd" ], "lm/W": [ "cx:lm_W" ], "ppm/K": [ "cx:ppm_K" ], "ppm/°C": [ "cx:ppm_delta_degC" ] }, "alias": { "meter": [ "cx:m" ], "metres": [ "cx:m" ], "meters": [ "cx:m" ], "centimeter": [ "cx:cm" ], "millimeter": [ "cx:mm" ], "foot": [ "cx:ft_i", "cx:ft_us" ], "feet": [ "cx:ft_i", "cx:ft_us" ], "ft": [ "cx:ft_i" ], "inch": [ "cx:in_i" ], "inches": [ "cx:in_i" ], "in": [ "cx:in_i" ], "kilograms": [ "cx:kg" ], "grams": [ "cx:g" ], "seconds": [ "cx:s" ], "sec": [ "cx:s" ], "second": [ "cx:arcsec", "cx:s" ], "minutes": [ "cx:min" ], "minute": [ "cx:arcmin", "cx:min" ], "hours": [ "cx:h" ], "hr": [ "cx:h" ], "kelvins": [ "cx:K" ], "Celsius": [ "cx:degC" ], "celsius": [ "cx:degC" ], "degC": [ "cx:degC" ], "Fahrenheit": [ "cx:degF" ], "fahrenheit": [ "cx:degF" ], "degF": [ "cx:degF" ], "cubic meter": [ "cx:m3" ], "m^3": [ "cx:m3" ], "m3": [ "cx:m3" ], "liter": [ "cx:L" ], "litres": [ "cx:L" ], "liters": [ "cx:L" ], "l": [ "cx:L" ], "milliliter": [ "cx:mL" ], "ml": [ "cx:mL" ], "km": [ "cx:km" ], "kilometer": [ "cx:km" ], "um": [ "cx:um" ], "micrometer": [ "cx:um" ], "μm": [ "cx:um" ], "nm": [ "cx:nm" ], "nanometer": [ "cx:nm" ], "yard": [ "cx:yd_i" ], "yards": [ "cx:yd_i" ], "mile": [ "cx:mi_i" ], "miles": [ "cx:mi_i" ], "statute mile": [ "cx:mi_i" ], "survey foot": [ "cx:ft_us" ], "mg": [ "cx:mg" ], "ug": [ "cx:ug" ], "μg": [ "cx:ug" ], "metric ton": [ "cx:t" ], "pound": [ "cx:lb_av" ], "pounds": [ "cx:lb_av" ], "lbs": [ "cx:lb_av" ], "millisecond": [ "cx:ms" ], "microsecond": [ "cx:us" ], "μs": [ "cx:us" ], "us": [ "cx:us" ], "day": [ "cx:d" ], "rankine": [ "cx:degR" ], "radians": [ "cx:rad" ], "degree": [ "cx:deg" ], "degrees": [ "cx:deg" ], "deg": [ "cx:deg" ], "arc minute": [ "cx:arcmin" ], "minute of arc": [ "cx:arcmin" ], "arc second": [ "cx:arcsec" ], "second of arc": [ "cx:arcsec" ], "revolution": [ "cx:turn" ], "rev": [ "cx:turn" ], "full turn": [ "cx:turn" ], "turns": [ "cx:turn" ], "grad": [ "cx:gon" ], "gradian": [ "cx:gon" ], "gons": [ "cx:gon" ], "milliradians": [ "cx:mrad" ], "steradians": [ "cx:sr" ], "unitless": [ "cx:one" ], "dimensionless ratio": [ "cx:one" ], "percentage": [ "cx:percent" ], "per cent": [ "cx:percent" ], "parts-per-million": [ "cx:ppm" ], "m^2": [ "cx:m2" ], "m2": [ "cx:m2" ], "square meter": [ "cx:m2" ], "cm2": [ "cx:cm2" ], "mm2": [ "cx:mm2" ], "km2": [ "cx:km2" ], "cm^3": [ "cx:cm3" ], "cm3": [ "cx:cm3" ], "microliter": [ "cx:uL" ], "μL": [ "cx:uL" ], "uL": [ "cx:uL" ], "rad/s": [ "cx:rad_s" ], "radians per second": [ "cx:rad_s" ], "rev/min": [ "cx:rpm" ], "m/s": [ "cx:m_s" ], "meter per second": [ "cx:m_s" ], "km/h": [ "cx:km_h" ], "kph": [ "cx:km_h" ], "m/s2": [ "cx:m_s2" ], "m/s^2": [ "cx:m_s2" ], "N*m": [ "cx:N_m" ], "N m": [ "cx:N_m" ], "mA": [ "cx:mA" ], "uA": [ "cx:uA" ], "μA": [ "cx:uA" ], "ohms": [ "cx:ohm" ], "Ω": [ "cx:ohm" ], "mohm": [ "cx:mohm" ], "kohm": [ "cx:kohm" ], "Mohm": [ "cx:Mohm" ], "uF": [ "cx:uF" ], "μF": [ "cx:uF" ], "nF": [ "cx:nF" ], "pF": [ "cx:pF" ], "mH": [ "cx:mH" ], "uH": [ "cx:uH" ], "μH": [ "cx:uH" ], "μW": [ "cx:uW" ], "uW": [ "cx:uW" ], "μV": [ "cx:uV" ], "uV": [ "cx:uV" ], "μC": [ "cx:uC" ], "uC": [ "cx:uC" ], "μΩ": [ "cx:uohm" ], "uΩ": [ "cx:uohm" ], "μT": [ "cx:uT" ], "uT": [ "cx:uT" ], "μmol": [ "cx:umol" ], "umol": [ "cx:umol" ], "nautical mile": [ "cx:nmi" ], "nautical miles": [ "cx:nmi" ], "angstrom": [ "cx:angstrom" ], "ångström": [ "cx:angstrom" ], "thou": [ "cx:mil" ], "oz": [ "cx:oz_av", "cx:oz_tr" ], "st": [ "cx:st" ], "gr": [ "cx:grain" ], "ton": [ "cx:ton_uk", "cx:ton_us" ], "week": [ "cx:week" ], "ft2": [ "cx:ft2_i" ], "in2": [ "cx:in2_i" ], "ft3": [ "cx:ft3_i" ], "in3": [ "cx:in3_i" ], "yd3": [ "cx:yd3_i" ], "gal": [ "cx:gal_imp", "cx:gal_us" ], "qt": [ "cx:qt_imp", "cx:qt_us" ], "pt": [ "cx:pt_imp", "cx:pt_us" ], "fl oz": [ "cx:floz_imp", "cx:floz_us" ], "g_n": [ "cx:g0" ], "standard gravity": [ "cx:g0" ], "cal": [ "cx:cal_IT", "cx:cal_th" ], "kcal": [ "cx:kcal_IT", "cx:kcal_th" ], "Btu": [ "cx:Btu_IT" ], "BTU_IT": [ "cx:Btu_IT" ], "elementary_charge": [ "cx:elementary_charge" ], "elementary charge": [ "cx:elementary_charge" ], "mechanical horsepower": [ "cx:hp_mech" ], "m3/s": [ "cx:m3_s" ], "kg/m3": [ "cx:kg_m3" ], "mol/m3": [ "cx:mol_m3" ], "Pa*s": [ "cx:Pa_s" ], "m2/s": [ "cx:m2_s" ], "W/(m*K)": [ "cx:W_m_K" ], "W/mK": [ "cx:W_m_K" ], "W/(m²*K)": [ "cx:W_m2_K" ], "W/(m2·K)": [ "cx:W_m2_K" ], "J/(kg*K)": [ "cx:J_kg_K" ], "1/K": [ "cx:per_K" ], "Ω*m": [ "cx:ohm_m" ], "ohm m": [ "cx:ohm_m" ], "m4": [ "cx:m4" ], "kg*m/s": [ "cx:kg_m_s" ], "kg/m2": [ "cx:kg_m2" ], "W/m2": [ "cx:W_m2" ], "cd/m2": [ "cx:cd_m2" ], "m3/h": [ "cx:m3_h" ], "g/cm3": [ "cx:g_cm3" ], "lb/ft3": [ "cx:lb_ft3" ], "μg/L": [ "cx:ug_L" ], "ug/L": [ "cx:ug_L" ], "μmol/L": [ "cx:umol_L" ], "umol/L": [ "cx:umol_L" ], "mPa*s": [ "cx:mPa_s" ], "mm2/s": [ "cx:mm2_s" ], "mW/(m*K)": [ "cx:mW_m_K" ], "kJ/(kg*K)": [ "cx:kJ_kg_K" ], "Ω*cm": [ "cx:ohm_cm" ], "mm4": [ "cx:mm4" ], "cm4": [ "cx:cm4" ], "in4": [ "cx:in4" ], "ft4": [ "cx:ft4" ], "mm3": [ "cx:mm3" ], "lbf*ft": [ "cx:lbf_ft" ], "lbf*in": [ "cx:lbf_in" ], "oz/ft2": [ "cx:oz_ft2" ], "W/cm2": [ "cx:W_cm2" ], "kW/m2": [ "cx:kW_m2" ], "μPa·s": [ "cx:uPa_s" ], "uPa·s": [ "cx:uPa_s" ], "µPa*s": [ "cx:uPa_s" ], "μS": [ "cx:uS" ], "uS": [ "cx:uS" ], "μS/cm": [ "cx:uS_cm" ], "uS/cm": [ "cx:uS_cm" ], "μSv": [ "cx:uSv" ], "uSv": [ "cx:uSv" ], "byte": [ "cx:byte" ], "bytes": [ "cx:byte" ], "1/s": [ "cx:per_s" ], "/s": [ "cx:per_s" ], "s^-1": [ "cx:per_s" ] } } }