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radian

SI unit of angular measure
Intangible unit_of_plane_angle Q33680
radian
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Summary

radian is an unit of plane angle[1]. radian draws 6,880 Wikipedia views per month (unit of plane angle category, ranking #1 of 8).[2]

Key Facts

  • Instance of: dimensionless unit[3], SI unit with special name[4], UCUM base unit[5]
  • Measured physical quantity: angular measure[6]
  • Commons category: Radian[7]
  • Unicode character: ㎭[8]
  • Described by source: ISO 80000-3:2006 Quantities and units — Part 3: Space and time[9]
  • Conversion to SI unit: 1 radian[10]
  • Wikidata SPARQL query equivalent: wd:Q33680 p:P2370/psn:P2370 [wikibase:quantityAmount ?source; wikibase:quantityUnit ?base]. ?item p:P2370/psn:P2370 [wikibase:quantityAmount ?target; wikibase:quantityUnit ?base]. BIND(?source / ?target as ?value)[11]
  • On focus list of Wikimedia project: Wikipedia:Vital articles/Level/4[12]
  • Unit symbol: rad[13], рад[14]
  • Maintained by WikiProject: WikiProject Mathematics[15]
  • Subdivision of this unit: deciradian[16]

Body

Influence

Things named for radian include Radian Glacier[17], a glacier[18].

Why It Matters

radian has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[19] radian is known by 46 alternative names across languages and contexts.[20]

Entities named for radian include Radian Glacier[17], a glacier[18].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . Dimensionless units in the SI. wikidata.org.
  2. [4] ↑ . ISO 80000-1: Quantities and units—Part 1: General. wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . ISO 80000-1:2009 Quantities and units—Part 1: General. wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.
  11. [13] ↑ . Logopedia. wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [17] ↑ . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [18] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [19] ↑ . Wikidata sitelinks. wikidata.org.
  3. [20] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). radian. Retrieved October 10, 2026, from https://4ort.xyz/entity/radian
MLA “radian.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Oct. 2026, https://4ort.xyz/entity/radian.
BibTeX @misc{4ortxyz_radian_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{radian}}, year = {2026}, url = {https://4ort.xyz/entity/radian}, note = {Accessed: 2026-10-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): radian — https://4ort.xyz/entity/radian (retrieved 2026-10-10)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 13w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    Local thumb → —
    Measured physical quantity → angular measure
    Maintained by wikiproject → WikiProject Mathematics
    Conversion to si unit → {'unit': 'Q33680', 'amount': '+1'}
    + 7 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.