How to convert miles to kilometers
Formula: km = mi ÷ 0.621371192. Worked example: 10 mi = 16.09344 km. Quick estimate: multiply by about 1.6 — the error is 0.58%, fine for everyday use but not for engineering or shopping by exact size.
About these units
The statute mile is exactly 1,609.344 m. Road distances and speed limits in the US and UK use miles, and running distances are quoted both ways: a 5K is about 3.1 miles and a marathon (42.195 km) about 26.2 miles.
Category: length. Results on this page are calculated in your browser and rounded to 7 significant digits; the table above uses 6. For other units of length open the full unit converter, or use the reverse page — kilometers to miles.