– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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About the BIPM
Metrology area:
Acoustics, Ultrasound and Vibration
Chemistry and Biology
Electricity and Magnetism
Ionizing Radiation
Mass and related quantities
Photometry and Radiometry
Time and Frequency

BIPM News:
World Metrology Day 2017 "Measurements for transport" The 2017 World Metrology Day website is now live and this year's theme is "Measurements for transport". World Metrology Day is an annual celebration of the signing of the Metre Convention on 20 May 1875. 2016 "Leaders of Tomorrow" course Eighteen participants, designated by their RMOs as future leaders in the global metrology system, have completed a two-week "Leaders of Tomorrow" training course as part of the BIPM Capacity Building and Knowledge Transfer programme. The course was held on 7-18 November 2016. Three young scientists complete METAS sponsored training Three young scientists from Argentina, South Africa and Albania have successfully completed training through a short placement at METAS, which was organized under the banner of the BIPM CB&KT programme. Are ozone concentrations in the atmosphere being underestimated? An article just published in Analytical Chemistry by the BIPM reports an independent value of the cross-section of ozone, which provides further evidence to suggest that the currently adopted conventional value of this quantity is too high, meaning that the reported ozone concentrations in the atmosphere are at present being underestimated. Time Department launches database and interactive tool for time scale contributors The BIPM Time Department has launched a new database and interactive tool for time scale contributors that is updated monthly with an inventory of laboratories that contribute to UTC and UTCr, their equipment and calibrations.
Latest reports and announcements:

The BIPM's mission and role:

The mission of the BIPM is to ensure and promote the global comparability of measurements, including providing a coherent international system of units for:

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

The unique role of the BIPM enables it to achieve its mission by developing the technical and organizational infrastructure of the International System of Units (SI) as the basis for the world-wide traceability of measurement results. This is achieved both through technical activities in its laboratories and through international coordination.