Definition availableExact definition Candidate definition
Turn
turncx:turn · Plane angle
1 turn = 2 × π rad.
- Quantity kind
- Plane angle
- SI dimension
1- Allowed roles
- Scalar
- Unit system / convention
- Other conventions
- Registry code
turn
Scope and distinctions
One complete plane rotation = 2 pi rad; no automatic modulo reduction.
Available operations
No converter is linked for this definition yet. You can inspect the definition and its sources.
Verification scope
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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 note on radian: full circle is 2 pi rad
Source checked:Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.
Definition and registry versions
- Definition revision
- 1.0.1
- Registry snapshot
- 0.3.0-preview.3 · preview
- Definition lifecycle
- candidate
- Definition owner
- core.metrology
- Definition digest
63f3c9bdf5052eb3bfd702092843ffa685421fdbfc83ee1ed4de9cab5de46138- Definition dependency digest
d5f1764d2594e7087b7a5f7506ca6ab7e23bed30e2be929aa4686abbd717418b
Digests identify definition content; they are not CVP evidence or production attestations.