Three days of science, celebration and global connection came to a close yesterday, marking a truly unforgettable 150th anniversary of the Metre Convention.

From inspiring sessions at UNESCO, to scientific collaboration at Versailles, and the global voices who joined us online — thank you for being part of this historic moment.

Watch Our Fun Wrap-Up Video

A behind-the-scenes look at the energy and excitement of the week, beautifully captured by our talented intern Zhili Xu, and premiered during the final session of the scientific conference.

Explore the Photo Album

From opening moments to closing smiles, scroll through our Anniversary Album here.

Watch the Highlights

Don’t miss our special anniversary video playlist, featuring:

• The opening video from World Metrology Day at UNESCO
• A message from the BIPM Director on 150 years of the Metre Convention
• Video messages from our global metrology community

Watch the full playlist here: BIPM Anniversary Playlist

Sharing and Re-posting?

We’d love to see your highlights! Please tag @BureauInternationaldesPoidsetMesures (BIPM) and use the hashtags: #BIPM150 | #WorldMetrologyDay | #MetrologyMatters

Together, we measured up to the moment — and we thank you.

Here’s to the next 150 years of metrology shaping the world.