World Metrology Day 2026

World Metrology Day marks the Metre Convention and the role of accurate measurement in society.

Frequently asked questions

When is World Metrology Day 2026?

World Metrology Day 2026 is on Wednesday, 20 May 2026.

What day of the week is World Metrology Day 2026?

It falls on Wednesday.

How is World Metrology Day calculated?

This event is observed every year on 20 May.