World Metrology Day

Category: Science
World Metrology Day in USA in 2025
Image by patricia serna , from Unsplash. CC0

About World Metrology Day

How long until World Metrology Day?
World Metrology Day .
Dates of World Metrology Day
2026 USA Thursday, May 21stWorld Metrology Day
2025 USA Wednesday, May 21stWorld Metrology Day
2024 USA Tuesday, May 21stWorld Metrology Day
2023 USA Sunday, May 21stWorld Metrology Day
2022 USA Saturday, May 21stWorld Metrology Day
Summary
Find out the dates, history and traditions of World Metrology  Day

World Metrology Day is an annual celebration of the signature of the Metre Convention on 20 May 1875 by representatives of seventeen nations.

The Convention set the framework for global collaboration in the science of measurement and in its industrial, commercial and societal applications. The original aim of the Metre Convention - the world-wide uniformity of measurement - remains as important today as it was in 1875.

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