Kilometres to Miles
Convert kilometres (km) to miles (mi) instantly — with formula and reference table.
Quick answer: 1 km = 0.621371 mi. To convert kilometres to miles, multiply by km × 0.621371.
Converting kilometres to miles
This converter changes a value in kilometres (km) into miles (mi). One kilometre equals 0.621371 mi. To convert kilometres to miles, multiply by 0.621371 (or divide by 1.609344). A 5K run is about 3.1 miles. The conversion runs entirely in your browser — enter a value and the result updates instantly, in either direction.
Formula
mi = km × 0.621371
Example
Convert 10 km to mi: 10 × 0.621371 = 6.213712 mi.
Kilometres to Miles conversion table
| Kilometres (km) | Miles (mi) |
|---|---|
| 1 km | 0.621371 mi |
| 2 km | 1.242742 mi |
| 3 km | 1.864114 mi |
| 5 km | 3.106856 mi |
| 10 km | 6.213712 mi |
| 20 km | 12.427424 mi |
| 25 km | 15.53428 mi |
| 50 km | 31.06856 mi |
| 100 km | 62.137119 mi |
How to use this converter
- Enter a value in the kilometres (km) field.
- Read the converted value in miles (mi) below.
- Type into the mi field instead to convert in reverse, or use the swap button.
Frequently asked questions
How many miles are in a kilometre?
1 kilometre equals 0.621371 miles.
How far is a 10K in miles?
10 km × 0.621371 = 6.21 miles.
How do I quickly estimate km to miles?
Multiply by 0.6 for a rough figure, or use the Fibonacci trick: consecutive Fibonacci numbers (5 km ≈ 3 mi, 8 km ≈ 5 mi, 13 km ≈ 8 mi) are near-conversions.