– 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

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.

25th meeting of the CGPM: 18-20 November 2014
Session I of the 104th meeting of the CIPM:
The decisions of the CIPM at their meeting in March 2015 are now available. Results of measurements with the International Prototype of the Kilogram published:
Between January 2014 and January 2015, the BIPM Mass Department carried out a calibration campaign with respect to the International Prototype of the Kilogram (IPK), in anticipation of the planned redefinition of the kilogram. The results have been published in the latest edition of Metrologia. This calibration campaign, named "Extraordinary Calibrations", is an important element of the CCM roadmap towards the redefinition of the kilogram. News from the 29th CCEM:
The CCEM held its 29th meeting on 12 and 13 March 2015 at the BIPM. The meeting was chaired by its new President, Dr Gert Rietveld from VSL, who made a presentation to the retiring President, Dr Barry Inglis, to thank him for his work over 12 years as President of the CCEM. Call for tenders for a high-precision resistance bridge for calibration of SPRTs:
The BIPM is issuing a call for tenders for a high-precision resistance bridge for calibration of SPRTs.
Deadline for receipt of replies is 31 March 2015 New President of the CCL: Prof. Massimo Inguscio:
The CIPM has appointed Prof. Massimo Inguscio as the new President of the CCL for a four-year term. New President of the CCEM: Dr Gert Rietveld:
The CIPM has appointed Dr Gert Rietveld as the new President of the CCEM for a four-year term. Dr Robert Kaarls elected an honorary member of the CIPM:
The CIPM has elected Dr Kaarls an honorary member in recognition of his outstanding contribution to the work of the committee. Election of the CIPM bureau:
At the first session of its 104th meeting, the CIPM has re-confirmed Dr Barry D. Inglis as CIPM President, and has elected Dr James W. McLaren as Secretary. It has elected Dr Willie E. May and Prof. Joachim Ullrich as Vice Presidents.