KM to Miles Converter
Convert kilometers to miles in one click — or flip the units to go from miles back to km, meters, yards or feet.
Formula used
How to use this converter
- Type the value you want to convert in the first box.
- Pick the starting unit in the From box and the target unit in the To box.
- The answer appears instantly — change any box and it recalculates on its own.
The formula
One mile is exactly 1.609344 kilometers. So miles = km × 0.621371, and km = miles × 1.609344. Example: a 10 km run is 10 × 0.621371 = 6.21 miles.
Quick conversion table
| Kilometers | Miles | Note |
|---|---|---|
| 1 km | 0.621 mi | Short walk |
| 5 km | 3.107 mi | Morning run |
| 10 km | 6.214 mi | 10K race |
| 42.2 km | 26.22 mi | Marathon |
| 100 km | 62.14 mi | Road trip stretch |
Where Indians use miles
India drives in kilometers, but miles pop up in Hollywood movies, US university applications (distances in miles), international marathon qualifying times, and second-hand imported cars whose odometers read in miles. Runners training for a 10K often compare their pace with mile-based plans from US apps — this converter bridges the gap.
Frequently asked questions
How many miles is 1 km?
1 km = 0.621371 miles. So 10 km is about 6.21 miles and 100 km is about 62.14 miles.
What is the formula for km to miles?
Multiply kilometers by 0.621371: miles = km × 0.621371. For the reverse, multiply miles by 1.609344.
How many km is 1 mile?
1 mile = 1.609344 kilometers, exactly. So 5 miles = 8.047 km.
Is a 10K run 6.2 miles?
Yes — 10 km × 0.621371 = 6.214 miles. A marathon (42.195 km) is 26.22 miles.