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CODATA recommended values of the fundamental physical constants and conversion factors of physics and chemistry

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Metrology areas

  • AUV: Acoustics, Ultrasound and Vibrations
    • CCAUV
    • BIPM contact: Dr Gianna Panfilo
  • EM : Electricity and Magnetism
    • Metrologia: Focus on Metrology in Electricity and Magnetism
    • CCEM
    • BIPM contact: Dr Michael Stock
  • L: Length
    • CCL
    • BIPM contact: Dr Gianna Panfilo
  • M: Mass and related quantities
    • CCM
    • BIPM contact: Dr Hao Fang
  • PR: Photometry and Radiometry
  • QM: Chemistry and Biology
    • People
  • RI: Ionizing radiation
  • T: Thermometry
  • TF: Time and Frequency
    • CCTF
    • BIPM Time Department Database
    • Time FTP Server
    • BIPM contact: Dr Patrizia Tavella
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  • The 2018 revision of the SI
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    • 26th CGPM (November 2018)
    • 2018 values of the Fundamental Physical Constants
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