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Japan Measurement System

Japan's traditional measurement system (shakkanho) was used from the 8th century until the adoption of the metric system in 1924.

Historical Context

The Japanese system was originally imported from China and adapted over centuries. It remained remarkably stable throughout Japan's history, providing continuity in architecture, crafts, and commerce. Many traditional units are still used in specific contexts like traditional architecture, carpentry, and cultural practices.

Historical Japan measurements
Measurement Units
Select a category to explore units
Sun
Symbol:
1 sun = 0.0303 meters
Shaku
Symbol:
1 shaku = 0.303 meters
Ken
Symbol:
1 ken = 1.818 meters
Chō
Symbol:
1 chō = 109.09 meters
Ri
Symbol:
1 ri = 3927.27 meters