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Welcome to the BIPM website
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Forthcoming meeting
From 4 to 5 September 2014
Meeting of the KCWG(II)
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The task of the BIPM is to ensure world-wide uniformity of measurements and their traceability to the International System of Units (SI).

It does this with the authority of the Convention of the Metre, a diplomatic treaty between fifty-six nations, and it operates through a series of Consultative Committees, whose members are the national metrology laboratories of the signatory States, and through its own laboratory work.

The BIPM carries out measurement-related research. It takes part in, and organizes, international comparisons of national measurement standards, and it carries out calibrations for Member States.

25th meeting of the CGPM: 18-20 November 2014.
The Convocation is now available for download, and the Draft BIPM Work Programme 2016-2019 is available for comment.

New Associate of the CGPM: Yemen : As of 21 July 2014, the Republic of Yemen is an Associate of the CGPM. – See also: How to become an Associate

Annual report to the Governments of the High Contracting Parties on the administrative and financial situation of the BIPM in 2013 now available : The 2013 Annual Report is now available on the BIPM website. The final printed report will be distributed later in the year as a single pack including the minutes of the 2013 meeting of the CIPM and the 2013 Director's Report in both French and English. – Read more about BIPM publications

New edition of BIPM e-News – This fifth issue of BIPM e-News is accompanied by a four-page supplement presenting BIPM core data for 2013.

The International System of Units (SI) : publication of the Supplement 2014 (updates to the 8th edition of the SI Brochure)

New Associate of the CGPM: Sudan : As of 26 June 2014, the Republic of the Sudan is an Associate of the CGPM. – See also: How to become an Associate

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