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International Prototype of the Kilogram

physical artifact that formerly defined the kilogram unit of mass
Place artificial_physical_object Q3738063
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International Prototype of the Kilogram

Summary

International Prototype of the Kilogram is an artificial physical object[1]. It draws 122 Wikipedia views per month (artificial_physical_object category, ranking #1 of 5).[2]

Key Facts

  • International Prototype of the Kilogram's image is recorded as CGKilogram.jpg[3].
  • International Prototype of the Kilogram's instance of is recorded as artificial physical object[4].
  • International Prototype of the Kilogram's instance of is recorded as material measure[5].
  • International Prototype of the Kilogram's instance of is recorded as weight[6].
  • International Prototype of the Kilogram's commissioned by is recorded as General Conference on Weights and Measure[7].
  • International Prototype of the Kilogram's maintained by is recorded as International Bureau of Weights and Measures[8].
  • International Prototype of the Kilogram's manufacturer is recorded as Johnson Matthey[9].
  • International Prototype of the Kilogram's made from material is recorded as platinum[10].
  • International Prototype of the Kilogram's made from material is recorded as iridium[11].
  • International Prototype of the Kilogram's made from material is recorded as platinum-iridium alloy[12].
  • International Prototype of the Kilogram's location is recorded as Pavillon de Breteuil[13].
  • International Prototype of the Kilogram's has use is recorded as primary standard[14].
  • International Prototype of the Kilogram's Commons category is recorded as International prototype of the kilogram[15].
  • +1799-00-00T00:00:00Z marks the founding of International Prototype of the Kilogram[16].
  • +1879-00-00T00:00:00Z marks the founding of International Prototype of the Kilogram[17].
  • +1889-00-00T00:00:00Z marks the founding of International Prototype of the Kilogram[18].
  • International Prototype of the Kilogram's significant event is recorded as ratification[19].
  • International Prototype of the Kilogram's significant event is recorded as verification[20].
  • International Prototype of the Kilogram's significant event is recorded as verification[21].
  • International Prototype of the Kilogram's significant event is recorded as verification[22].
  • International Prototype of the Kilogram's significant event is recorded as deprecation[23].
  • International Prototype of the Kilogram's authority is recorded as Metre Convention[24].
  • International Prototype of the Kilogram's official website is recorded as https://www.bipm.org/en/bipm/mass/ipk/[25].
  • International Prototype of the Kilogram's shape is recorded as right circular cylinder[26].
  • International Prototype of the Kilogram's official name is recorded as {'lang': 'fr', 'text': 'Prototype international du kilogramme'}[27].

Body

Designation and Status

Recorded instance of include artificial physical object[4], material measure[5], and weight[6].

History and Context

Recorded inception include +1799-00-00T00:00:00Z[16], +1879-00-00T00:00:00Z[17], and +1889-00-00T00:00:00Z[18].

Why It Matters

International Prototype of the Kilogram draws 122 Wikipedia views per month (artificial_physical_object category, ranking #1 of 5).[2] It has Wikipedia articles in 7 language editions, a strong signal of global cultural recognition.[28] It is known by 5 alternative names across languages and contexts.[29]

References

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

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . 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] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . wikidata.org.
  16. [18] ↑ . wikidata.org.
  17. [19] ↑ . wikidata.org.
  18. [20] ↑ . wikidata.org.
  19. [21] ↑ . wikidata.org.
  20. [22] ↑ . wikidata.org.
  21. [23] ↑ . wikidata.org.
  22. [24] ↑ . wikidata.org.
  23. [25] ↑ . wikidata.org.
  24. [26] ↑ . wikidata.org.
  25. [27] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [28] ↑ . Wikidata sitelinks. wikidata.org.
  3. [29] ↑ . 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). International Prototype of the Kilogram. Retrieved May 3, 2026, from https://4ort.xyz/entity/international-prototype-of-the-kilogram
MLA “International Prototype of the Kilogram.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/international-prototype-of-the-kilogram.
BibTeX @misc{4ortxyz_international-prototype-of-the-kilogram_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{International Prototype of the Kilogram}}, year = {2026}, url = {https://4ort.xyz/entity/international-prototype-of-the-kilogram}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): International Prototype of the Kilogram — https://4ort.xyz/entity/international-prototype-of-the-kilogram (retrieved 2026-05-03)

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