Miles to kilometres
Type a value in either box. 1 mi = 1.609344 km.
Last updated
How to convert
To convert miles to kilometres, multiply by 1.609344.
km = mi × 1.609344
For example: 20 mi × 1.609344 = 32.1869 km.
A mile is defined as exactly 1,609.344 metres.
In your head: Multiply by 8 and divide by 5 (or multiply by 1.6): 50 miles ≈ 80 km (exactly 80.47 km).
When you’ll need it
Handy when driving in Europe or comparing a UK route with a European map: a 100-mile journey is about 161 km.
Common values
| Miles (mi) | Kilometres (km) |
|---|---|
| 1 mi | 1.6093 km |
| 2 mi | 3.2187 km |
| 3 mi | 4.828 km |
| 5 mi | 8.0467 km |
| 10 mi | 16.0934 km |
| 13.1 mi | 21.0824 km |
| 20 mi | 32.1869 km |
| 26.2 mi | 42.1648 km |
| 50 mi | 80.4672 km |
| 60 mi | 96.5606 km |
| 70 mi | 112.6541 km |
| 100 mi | 160.9344 km |
Questions
- How many kilometres are in a mile?
- 1 mile is 1.609344 kilometres.
- What is the formula to convert miles to kilometres?
- km = mi × 1.609344. A mile is defined as exactly 1,609.344 metres.
- What is 20 miles in kilometres?
- 20 miles is 32.1869 kilometres.
- 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.