KM to Miles Converter
Convert kilometers to miles, or miles to kilometers, live as you type in either field.
1 km = 0.621371 miles. Type in either field — the other updates live.
Need the opposite? Miles to KM Converter
What is KM to Miles Converter?
Type a value into either field and the other updates instantly. One kilometer is exactly 0.621371 miles (the reciprocal of the internationally agreed 1.609344 km per mile), so results are precise, not approximated. Useful for converting a running or driving distance, a recipe or spec sheet using the "wrong" unit for your country, or just double-checking a quick mental conversion.
KM to Miles Converter Table
| Kilometers | Miles |
|---|---|
| 1 | 0.6214 |
| 5 | 3.1069 |
| 10 | 6.2137 |
| 21.1 | 13.11 |
| 42.2 | 26.22 |
| 50 | 31.0686 |
| 100 | 62.1371 |
How to Use the KM to Miles Converter
- 1
Type a Distance: Enter a value in either the kilometers or miles field.
- 2
Read the Converted Result Instantly: The other field updates automatically as you type.
KM to Miles Formula
miles = kilometers × 0.621371 Reverse: kilometers = miles × 1.609344
Common KM to Miles Conversions
1 km = 0.6214 miles 5 km = 3.1069 miles 10 km = 6.2137 miles (a common race distance) 21.1 km = 13.11 miles (a half marathon) 42.2 km = 26.22 miles (a full marathon) 100 km = 62.1371 miles
How to Convert KM to Miles
Multiply the kilometer value by 0.621371. For a rough mental estimate, multiply by 0.6 instead. Close enough for a quick sanity check, though not exact.
KM to Miles Examples
A 5K race is exactly 5 × 0.621371 = 3.1069 miles. A road sign showing 120 km converts to 120 × 0.621371 = 74.56 miles. Checking a 26.2-mile marathon in km: 26.2 × 1.609344 = 42.16 km.
Frequently Asked Questions
Common questions about KM to Miles Converter.