– 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:
BIPM-ILAC joint webinar: Mining KCDB 2.0 in the context of accreditation The BIPM and ILAC welcomed more than 600 experts from Accreditation Bodies and Accredited Laboratories around the world who participated in the webinar on "Mining KCDB 2.0 in the context of accreditation" on 21 January 2021. Beginning a new phase of the dissemination of the kilogram Following completion of the first key comparison of realizations of the kilogram, CCM.M-K8.2019, the internationally coordinated dissemination of the kilogram will enter into a new phase on 1 February 2021. The traceability of the mass unit to the Planck constant will then be taken from the 'consensus value' of the kilogram. Revised CIPM MRA documents now available The documents supporting the CIPM Mutual Recognition Arrangement (CIPM MRA) have been revised and published on 11 January 2021. This follows the international review of the Arrangement in 2016 and the update of the supporting documents, which was initiated in 2018.
Latest reports and announcements:

The BIPM's mission and role:

  • Our vision is to be universally recognized as the world focus for the international system of measurement.

  • Our mission is to work with the NMIs of our Member States, the RMOs and strategic partners world-wide and to use the BIPM's international and impartial status to promote and advance the global comparability of measurements.