What could the future definition of the second look like? How can metrology support emerging fields such as biotechnology and quantum communications? And how will the international measurement system continue to evolve in response to digitalization and new scientific and technological needs?

These are among the topics that will be explored when representatives of the Member States come together in Versailles, France, for the 28th meeting of the General Conference on Weights and Measures (CGPM) from 13 to 15 October 2026.

For those wishing to follow the Conference online, selected sessions will be livestreamed across all three days, providing an opportunity to hear directly from experts and representatives of the international metrology community as they discuss scientific and institutional issues.

See the full agenda and timings here →

About the 28th meeting of the CGPM

The CGPM is the plenary and policy-making body and supreme authority of the BIPM. Composed of representatives of the Member States, it meets every four to six years to take decisions on scientific, institutional and financial matters related to the BIPM and its work.

The 28th meeting of the CGPM will take place from Tuesday 13 to Thursday 15 October 2026 at the Palais des Congrès de Versailles, France.

Only selected sessions will be available through the public livestreams.