The BIPM

The BIPM

The Bureau International des Poids et Mesures (BIPM) is the international organization through which Member States work together on matters related to metrology.

As the home of the International System of Units (SI) and the international reference time scale (UTC), we work with Members’ National Metrology Institutes, Regional Metrology Organizations and strategic partners world-wide to promote and advance the global comparability and traceability of measurements for:

  • Scientific discovery and innovation
  • Industrial manufacturing and international trade
  • Improving quality of life and sustaining the global environment.

Established by the Metre Convention in 1875, our mission is to be the world focus for the international system of measurement.

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News and Updates

Top 10 News Stories from 2024

As we close the chapter on 2024, BIPM reflects on a year filled with achievements that have furthered our mission to advance global metrology. From scientific updates to new courses and collaborations, these achievements highlight the critical role of accurate and reliable measurements in shaping our world.

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Sun Dec 29 2024

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Your transmission delay* :  s

Error while getting Time from BIPM/UTC clock, use local clock instead:{"readyState":0,"status":0,"statusText":"error"}

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*. The time displayed here is for demonstration purposes only. If you need an official reference please contact a Time Dissemination Service.