International Bureau of Weights and Measures

The International Bureau of Weights and Measures (French: Bureau international des poids et mesures, BIPM) is an intergovernmental organisation, through which its 59 member-states act together on measurement standards in four areas: chemistry, ionising radiation, physical metrology, as well as Coordinated Universal Time. It is based in Saint-Cloud, near Paris, France. The organisation has been referred to as IBWM (from its name in English) in older literature.

International Bureau of Weights and Measures
AbbreviationBIPM (from French name)
Formation20 May 1875; 148 years ago (1875-05-20)
TypeIntergovernmental
Location
Coordinates48°49′45.55″N 2°13′12.64″E
Region served
Worldwide
Membership
63 countries
  • Argentina
  • Australia
  • Austria
  • Belarus
  • Belgium
  • Brazil
  • Bulgaria
  • Canada
  • Chile
  • Colombia
  • Croatia
  • Czech Republic
  • Czechia
  • Denmark
  • Ecuador
  • Egypt
  • Estonia
  • Finland
  • France
  • Germany
  • Greece
  • Hungary
  • India
  • Indonesia
  • Iran
  • Iraq
  • Ireland
  • Israel
  • Italy
  • Japan
  • Kazakhstan
  • Kenya
  • Lithuania
  • Malaysia
  • Mexico
  • Montenegro
  • Morocco
  • Netherlands
  • New Zealand
  • Norway
  • Pakistan
  • People's Republic of China
  • Poland
  • Portugal
  • Romania
  • Russia
  • Saudi Arabia
  • Serbia
  • Singapore
  • Slovakia
  • Slovenia
  • South Korea
  • South Africa
  • Spain
  • Sweden
  • Switzerland
  • Thailand
  • Tunisia
  • Turkey
  • Ukraine
  • United Arab Emirates
  • United Kingdom
  • United States
  • Uruguay
Official language
French and English
Director
Martin Milton
Websitewww.bipm.org
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