Watt hour

Scope and distinctions

Energy, not power. W to Wh requires an explicit power/time model.

Available operations

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

No legacy converter is linked for this definition.

Verification scope

UUCE conversion capability

units.convert version 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

  Table 4 watt = joule/second; Table 8 hour = 3600 s

  Source checked: 2026-10-29

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