Definition availableExact definition Candidate definition
Microgram
µgcx:ug · Mass
1 µg = 0.000000001 kg.
- Quantity kind
- Mass
- SI dimension
M- Allowed roles
- Scalar
- Unit system / convention
- SI decimal multiples
- Registry code
ug
Scope and distinctions
Definition metadata only. The quantity kind and model field contract determine compatible use; no new UUCE execution or CVP claim.
Available operations
No converter is linked for this definition yet. You can inspect the definition and its sources.
Verification scope
New UUCE conversion paths have not been CVP-verified or production-attested. An exact unit definition is not a verification claim.
Candidate is a registry lifecycle state. It is not a completed review or CVP verification.
Definition sources
- BIPM — The International System of Units (SI)
9th edition, version 4.01, June 2026
Tables 2, 4 and 5: SI units; Table 7: SI prefixes
Source checked:Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.
Definition and registry versions
- Definition revision
- 1.0.0
- Registry snapshot
- 0.3.0-preview.3 · preview
- Definition lifecycle
- candidate
- Definition owner
- core.metrology
- Definition digest
dbacec4e9a455912fa68044fbb2fc05aa27bfed09c16aca18278c6a6dbc9f21f- Definition dependency digest
e0df48cf79b2a9f2d235dd0485f1851c6462ddc8dfb3db0eec18b921489e5299
Digests identify definition content; they are not CVP evidence or production attestations.