Liaison: Committee on Data of the International Science Council (CODATA)


Formal relationship


Joint statement

2022 Joint Statement of Intent on the digital transformation in the international scientific and quality infrastructure

Links between the BIPM and CODATA

  • The CODATA Task Group on Fundamental Physical Constants (CODATA-TGFC) participates in the CCU.
  • The BIPM hosts the CODATA-TGFC portal on the BIPM website, and regularly hosts CODATA-TGFC meetings.
  • Dr Franck Bielsa is a CODATA-TGFC member and the BIPM liaison.
  • Dr Janet Miles is a member of the CODATA-DRUM.


CODATA is the Committee on Data of the International Science Council (ISC). CODATA exists to promote global collaboration to improve the availability and usability of data for all areas of research.

The mission of the Committee on Data (CODATA) TGFC is to periodically provide the scientific and technological communities with a self-consistent set of internationally recommended values of the basic constants and conversion factors of physics and chemistry, based on all of the relevant data available at a given point in time.

The CODATA-TGFC assists the BIPM in its role related to the development of the SI, which is now largely based on fixed numerical values of fundamental constants. The CODATA-TGFC promotes the consistent use of the SI, in particular by expressing the recommended values of the adjusted constants in SI units. Similarly, the BIPM promotes consistent use of the latest CODATA recommended values of the basic constants.




Dr Franck Bielsa

Physical Metrology Department

Dr Janet R. Miles

International Liaison and Communication


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