– 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/

    About the BIPM
    Worldwide metrology
     The Metre Convention
     General Conference on Weights and Measures (CGPM)
     National Metrology Institutes (NMIs)
     Regional Metrology Organizations (RMOs) recognized within the framework of the CIPM MRA
     BIPM liaison work
     World Metrology Day
    26th meeting of the CGPM: 13-16 November 2018
      – Presentations at the 26th meeting of the CGPM
      – Preparatory meeting on the BIPM Work Programme and associated budget
      – Attendance and registration
    Committee structure
     Consultative Committees of the CIPM
     Joint Committees of the BIPM and other international organizations
    International equivalence of measurements: the CIPM MRA
      – KCDB leaflet
      – Approval process
      – Historical development of the CIPM MRA
      – Organizational structure of the CIPM MRA
      – The essential points of the CIPM MRA
      – Potential economic impact of the CIPM MRA
     Participating laboratories
     CIPM MRA documents
     CIPM and regional key comparisons
     Calibration and Measurement Capabilities of NMIs
     Use of the CIPM MRA logo
    The International System of Units (SI)
      – SI prefixes
      – Base units
      – FAQs: Frequently Asked Questions about the revision of the SI
     History of the SI
    BIPM: Our work programme
     BIPM Staff
    BIPM Capacity Building & Knowledge Transfer Programme
      – 2019 "Optimizing the CIPM MRA - the KCDB 2.0" course
      – 2019 EURAMET-BIPM Training Course on Organisation and Piloting of Intercomparisons in Ionizing Radiation
      – 2019 BIPM-GULFMET "CMCs and QMS Review"
      – 2019 Varenna Metrology School and METAS project
      – 2019 BIPM-COOMET "CIPM MRA review outcomes" Workshop
      – 2018 BIPM-AFRIMETS "Sound beginning in the CIPM MRA" Workshop
      – "Train the trainer": transitioning to ISO/IEC 17025:2017 in the CIPM MRA
      – 2018 BIPM-COOMET "Sound beginning in the CIPM MRA" Workshop
      – 2018 "Effective participation in Coordinated Universal Time (UTC)" course
      – EURAMET - BIPM Training on review of quality management systems
      – 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
     International reference time scales
    Our publications
     SI Brochure: The International System of Units (SI)
     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
      – BIPM highlights
      – CBKT programme
      – CIPM MRA
      – Committees
      – Member States and Associates
      – Metrology events
      – Publications
      – Revision of the SI
      – Staff and recruitments
      – Sten's metre
      – Test web styles
      – Webcast of CCQM Workshop on Advances in Metrology in Chemistry and Biology, 10 April 2019: Starts at 9.10 am (UTC +2)
      – Impact studies related to metrology
      – Impact studies related to metrology (Ada's test page)
      – Happy New Year!
      – JCTLM Workshop 2017: Accurate results for patient care
     ZZZZ Calls for Tender / Consultations
     YYYY Vacancies