– the intergovernmental organization through which Member States act together
     on matters related to measurement science and measurement standards.
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Site map

  • BIPM home page:
  • http://www.bipm.org/en/about-us/
  • BIPM metrology portal:
  • http://search.bipm.org/
  • The BIPM key comparison database:
  • http://kcdb.bipm.org/
  • JCTLM database:
  • http://www.bipm.org/jctlm/
  • BIPM-OIML Resource Center:
  • http://www.metrologyinfo.org/
  • IERS Conventions Center:
  • http://tai.bipm.org/iers/

    Measurement units: the SI
      – SI prefixes
      – Base units
     On the future revision of the SI
     Brief history of the SI
    BIPM: Our work programme
     Organizational structure
    BIPM Capacity Building & Knowledge Transfer Programme
      – 2017 APMP-DEC "Leadership training"
      – 2017–2018 "Support for GULFMET key comparison of Zener voltage standards" project
    Our services
     Comparisons piloted by the BIPM
     Calibration and measurement services
     DO NOT EXPORT! International reference time scales
    Our publications
     SI Brochure: The International System of Units (SI) [8th edition, 2006; updated in 2014]
     Practical realizations of the definitions of some important units
     Director's Reports on the Activity and Management of the BIPM
     Scientific publications
     Guides in Metrology
    BIPM Conference Centre
     Calendar of meetings
     BIPM and co-organized workshops
     Miscellaneous BIPM events
     How to get to the BIPM
    25th meeting of the CGPM: 18-20 November 2014
    News from the BIPM
      – Metrology events
      – Redefinition of the SI
      – Member States and Associates
      – CIPM MRA
      – Committees
      – Publications
      – Staff and recruitments