Please SAVE THE DATE 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.

We are looking forward to welcoming you to Paris and Versailles, or online, so that you can join us in celebrating this historic occasion.

The events will provide an opportunity to look back on 150 years of achievements in metrology since the creation of the BIPM and to recognize the vital importance of measurement science in all aspects of our lives.

As well as celebrating past achievements, the anniversary will include our vision for the future of metrology for the next 50 years and beyond!

Further details will be available from the BIPM website.