KM to Miles Converter
Converting kilometers to miles — for road trips, running distances, or speed limits? Enter a value for an instant result. Defaults to km → mi.
Kilometers to miles
All units in this category
How to convert kilometers to miles
One kilometer equals 0.621371 miles. To convert km to miles, multiply by 0.621371. For example, 10 km × 0.621371 = 6.21371 miles.
Quick conversion table
Common kilometer-to-mile conversions for quick reference:
1 km
0.621371 mi
5 km
3.10686 mi
10 km
6.21371 mi
21 km
13.0488 mi
42 km
26.0976 mi
50 km
31.0686 mi
100 km
62.1371 mi
160 km
99.4194 mi
500 km
310.686 mi
1000 km
621.371 mi
Need the reverse? Try our miles to km converter, or browse every unit in the main unit converter.
Frequently asked questions
How many miles are in a kilometer?
0.621371 miles per kilometer.
How do you convert km to miles?
Multiply kilometers by 0.621371. Example: 100 km × 0.621371 = 62.137 miles.
How many miles is a 10K run?
10 km = 6.21371 miles.
How many miles is a marathon?
A marathon is 42.195 km = 26.219 miles.
Which countries use miles?
The US, UK, and a few others use miles for road distances; most of the world uses kilometers.