Ri (里) to km
Convert the traditional Korean ri to kilometers. Old sayings and place names still use it.
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Common values
Formula
km = ri × 0.3927
In late-Joseon Korea one ri was about 392.7 m — so "ten ri" is roughly 3.9 km. The Chinese li (500 m) and Japanese ri (3.9 km) are different units with the same character.
Frequently asked questions
Q. How many km is 1 ri?
1 ri is 0.393 km, and 10 ri is 3.927 km. Type any value in the box above to convert instantly.
Q. And how many ri is 1 km?
1 km is 2.546 ri. This converter works both ways, so typing in the right box updates the left one.
Q. Where is this unit used?
In late-Joseon Korea one ri was about 392.7 m — so "ten ri" is roughly 3.9 km. The Chinese li (500 m) and Japanese ri (3.9 km) are different units with the same character.
Other converters
Traditional units (geun, doe, majigi and so on) vary by region and product.