Celebrating 150 Years of the Metre Convention - Together
Past, Present and Future
| Downloadable Assets | Event Support | Social Media Support |
| The Official Poster | Use our Videos | Use #BIPM150 |
| Social Media Graphics | Upload your national event and poster | Share your photos |
| The Anniversary logo | Tag us on LinkedIn |
| 64 Member States | 37 Associates | 7 Base Units |
| As of May 2025, 64 countries are Member States of the BIPM, underscoring a strong global commitment to unified measurement standards. | In addition to the Member States, 37 Associates participate in BIPM activities, reflecting widespread international collaboration. | The International System of Units (SI) comprises seven base units - second, metre, kilogram, ampere, kelvin, mole and candela – that form the foundation for all scientific and technical measurement worldwide. |
| + 4 000 CBKT Participants | 26 125 CMCs and 1 211 Key Comparisons | 98 NMIs and 156 DIs |
| More than 4 000 individuals from 126 countries have engaged in the BIPM’s Capacity Building and Knowledge Transfer (CBKT) programs, enhancing global metrological capabilities. | As of December 2024, 26 125 CMCs have been published in the KCDB (across general physics, ionizing radiation and chemistry) and 1 211 key comparisons and 713 supplementary comparisons have been carried out, ensuring international consistency and equivalence in measurement standards. | A total of 258 institutes, comprising 98 NMIs, 156 DIs and 4 international organizations, participate in the CIPM Mutual Recognition Arrangement (CIPM MRA), ensuring global equivalence of measurement standards. |