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.

Key topics

BIPM Departments

Featured videos

Your transmission delay^* :  s

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