Ounce (avoirdupois)

Scope and distinctions

Named mass convention; do not infer avoirdupois/troy or short/long identity from the unqualified symbol.

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

• NIST — Handbook 44 — Appendix C, General Tables of Units of Measurement

  2026 edition; Appendix C

  Appendix C: avoirdupois mass, 16 ounces per pound

  Source checked: 2026-10-29

  Factual definition relationships are independently encoded; no source prose or media redistributed.