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
QHow 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.
QAnd 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.
QWhere 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.
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Traditional units (geun, doe, majigi and so on) vary by region and product.