This month, the global metrology community commemorates a historic milestone—150 years since the signing of the Metre Convention, a landmark agreement that laid the foundation for international cooperation in measurement science. This anniversary marks a century and a half of collaboration, innovation, and impact, underscoring how accurate and reliable measurements shape our world.

Under the 2025 theme, “Measurements for all times, for all people,” AAA Accreditation extends a warm invitation to laboratories, metrologists, scientists, students, and the public to join in this year’s celebration. Events will range from the official in-person commemoration at UNESCO on World Metrology Day to a series of dynamic scientific and cultural gatherings around the globe.

Keynote addresses, panel discussions, and special metrology sessions will bring together professionals from diverse sectors to explore and share how measurement drives progress in science, industry, healthcare, education, and beyond.

Signed on 20 May 1875, the Metre Convention established a lasting framework for international cooperation in metrology. It led to the creation of the International Bureau of Weights and Measures (BIPM), a pivotal institution that ensures global measurement consistency—essential for research, innovation, equitable trade, and sustainable development.

Today, measurements underpin nearly every facet of modern life—from advancing technology and facilitating fair commerce to improving public health and food safety. The legacy of the Metre Convention lives on through the continued pursuit of precision, equity, and global trust in measurements.

You can join us and know more about the events agenda from here