Kilometres to miles
Type a value in either box. 1 km = 0.621371 mi.
Last updated
How to convert
To convert kilometres to miles, divide by 1.609344 (or multiply by 0.621371).
mi = km × 0.621371
For example: 20 km ÷ 1.609344 = 12.4274 mi.
A mile is defined as exactly 1,609.344 metres.
In your head: Multiply by 5 and divide by 8 (or multiply by 0.6): 80 km ≈ 50 miles (exactly 49.71).
When you’ll need it
Road signs in continental Europe are in kilometres, and running races are mostly measured in km (5K, 10K), while UK and US roads use miles.
Common values
| Kilometres (km) | Miles (mi) |
|---|---|
| 1 km | 0.6214 mi |
| 2 km | 1.2427 mi |
| 3 km | 1.8641 mi |
| 5 km | 3.1069 mi |
| 10 km | 6.2137 mi |
| 15 km | 9.3206 mi |
| 20 km | 12.4274 mi |
| 21.0975 km | 13.1094 mi |
| 42.195 km | 26.2188 mi |
| 50 km | 31.0686 mi |
| 100 km | 62.1371 mi |
| 1,000 km | 621.3712 mi |
Questions
- How many kilometres make a mile?
- 1 mile is 1.609344 kilometres, so 1 kilometre = 0.621371 miles.
- What is the formula to convert kilometres to miles?
- mi = km × 0.621371. A mile is defined as exactly 1,609.344 metres.
- What is 20 kilometres in miles?
- 20 kilometres is 12.4274 miles.
- How many miles is a 5K, 10K, half marathon and marathon?
- A 5K is 3.107 miles, a 10K is 6.214 miles, a half marathon (21.0975 km) is 13.109 miles and a marathon (42.195 km) is 26.219 miles.