Weights and Measures Day

What Is Weights and Measures Day?

November 1st is "Weights and Measures Day" in Japan, commemorating the enforcement of the current Measurement Act on November 1, 1993. It was established by the then Ministry of International Trade and Industry (now the Ministry of Economy, Trade and Industry).

Accurate Measurement, a Foundation of Everyday Life

Measurement -- accurately determining length, weight, temperature, and other quantities -- underpins countless aspects of economic activity and daily life.

• Origin: the date commemorates the November 1, 1993 enforcement of the current Measurement Act
• Purpose: to deepen society's understanding of the importance of accurate measurement
• The previous observance: June 7th, the date the earlier Measurement Act took effect, was once recognized as Weights and Measures Day

A Society Built on Trustworthy "Measuring Sticks"

From weighing groceries to precisely measuring medical devices and industrial products, fair trade and safety in society simply couldn't function without a reliable system of measurement.

Tips for Marking This Day

• Check the accuracy of measuring devices at home, like a bathroom scale or kitchen scale
• Look into the history and structure of the Measurement Act
• Notice the measuring tools around you in everyday life
• Think about the role accurate measurement plays in society

Accurate Measurement Builds a Trustworthy Society

Measurement, something we rarely think about, is a vital system supporting fairness throughout society. November 1st is a day to appreciate the value of that accuracy.