Resolution 3 of the 46th CIPM (1956)

Système International d'Unités

The Comité International des Poids et Mesures,


  • the task entrusted to it by Resolution 6 of the 9th Conférence Générale des Poids et Mesures (CGPM) concerning the establishment of a practical system of units of measurement suitable for adoption by all countries adhering to the Metre Convention,
  • the documents received from twenty-one countries in reply to the enquiry requested by the 9th CGPM,
  • Resolution 6 of the 10th CGPM, fixing the base units of the system to be established,


  1. that the name “Système International d’Unités” be given to the system founded on the base units adopted by the 10th CGPM, viz.:

    [This is followed by the list of the six base units with their symbols, reproduced in Resolution 12 of the 11th CGPM (1960)].
  2. that the units listed in the table below be used, without excluding others which might be added later:

    [This is followed by the table of units reproduced in paragraph 4 of Resolution 12 of the 11th CGPM (1960)].

reference The reader should note that the official version of this Resolution is the French text

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