Kilometers to Miles
Convert kilometers to miles instantly. Accurate km to mi converter.
About this tool
Kilometers and miles are the two most widely used units for measuring distances, with miles used primarily in the United States, United Kingdom, and a few other countries, and kilometers used everywhere else. Converting between them is essential when reading maps, following running or cycling routes, understanding speed limits when driving abroad, or interpreting distances from international sources. This converter gives instant, precise results as you type.
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- ✅ Files never leave your device
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How it works
The conversion formula is: miles = kilometers × 0.621371. The factor 0.621371 is derived from the exact definition of a mile (1 mile = 1.609344 kilometers). For a quick mental estimate, multiply km by 0.6 — this gives a rough result within about 3% accuracy.