Welcome - BIPM

What is the BIPM? part 1

The BIPM is...

the international organization established by the Metre Convention in 1875, through which Member States act together on matters related to measurement science and measurement standards

the home of the International System of Units (SI) and the international reference time scale (UTC).

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News and Updates

SAVE THE DATE

We are looking forward to welcoming you to Paris and Versailles, or online, for a series of special events on 20, 21 and 22 May 2025 to celebrate the 150th anniversary of the signing of the Metre Convention.

Building Stronger Connections Between Quality Infrastructure and Regulation

On 6 December 2024, BIPM and the OECD hosted a full-day event to explore the critical links between regulatory systems and QI.

Deadline Extension for Poster Submissions – Celebrate 150 Years of the Metre Convention!

In response to overwhelming interest, the BIPM is pleased to announce that the deadline for poster abstract submissions for the 150th anniversary of the Metre Convention has been extended to 15 January 2025.

BIPM Extends Use of Off-Site Facility to Calibrate Secondary Standards for Radiation Protection Dosimetry

The BIPM is advancing dosimetry services for National Metrology Institutes (NMIs) by expanding its use of off-site facilities for calibration and comparison services.

BIPM Joins IPCC as Observer – Supporting Precise Climate Science at COP29

The BIPM has achieved a key milestone in climate science by securing observer status at the Intergovernmental Panel on Climate Change (IPCC).

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Reports and announcements

Report of the 31st meeting of the CCT (2024)

On the rationale for recent updates to the SI Brochure concerning angles and quantities with the unit one

Young Metrologists' 2050+ Vision

Decisions of Session III of the 113th meeting of the CIPM

Report of Session II of the 113th meeting of the CIPM (2024)

Report of the 26th meeting of the CCU (2024)

Report of the 29th meeting of the CCQM (2024)

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What is the BIPM? part 2

Our mission and objectives

The BIPM's vision is to be universally recognized as the world focus for the international system of measurement.

The BIPM's mission is to work with the National Metrology Institutes of its Member States, the Regional Metrology Organizations and strategic partners world-wide and to use its international and impartial status to promote and advance the global comparability of measurements for:

Scientific discovery and innovation
Industrial manufacturing and international trade
Improving the quality of life and sustaining the global environment.

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