Lumen

Scope and distinctions

Luminous flux, distinct from luminous intensity despite the same SI dimension vector.

Available operations

UUCE executable Preview · Use cx:lm with a compatible unit and a pinned snapshot.

No legacy converter is linked for this definition.

Verification scope

UUCE conversion capability

units.convert@0.1.1 · VERIFIED

Production binding at publication

CURRENT

The definition lifecycle describes this registry entry. CVP status describes the conversion capability and the cases and rejection partitions in its Manifest. CVP Manifest · Public replay cases

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: 2026-10-29

  Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.