Kilometres to miles – and miles to kilometres
1 km = 0.62137119 mi
All units in this category
- 1,000,000mm
- 100,000cm
- 1,000m
- 1km
- 0.1mil
- 39,370.079in
- 3,280.8399ft
- 1,093.6133yd
- 0.62137119mi
- 0.5399568M
Formula
Multiply the value in kilometres by 0.62137119 to get miles.mi = km × 0.62137119
Multiply the value in miles by 1.609344 to get kilometres.km = mi × 1.609344
How to convert kilometres to miles
Type a value in the field above and the result is calculated instantly. Use the arrow button to swap direction, or pick other units from the lists.
Doing it in your head
A rough conversion for when the calculator is not to hand. The error comes last, and it holds in both directions at that order of magnitude.
- Kilometres to miles: × 5 ÷ 8. That gives 0.625 instead of 0.621371, an error of 0.58%.
- Miles to kilometres: × 2 − 20%. That gives 1.6 instead of 1.60934, an error of 0.58%.
Kilometres to miles – common values
| Kilometres (km) | Miles (mi) |
|---|---|
| 1 | 0.621371 |
| 2 | 1.24274 |
| 3 | 1.86411 |
| 5 | 3.10686 |
| 10 | 6.21371 |
| 20 | 12.4274 |
| 50 | 31.0686 |
| 100 | 62.1371 |
| 500 | 310.686 |
| 1,000 | 621.371 |
Miles to kilometres – common values
| Miles (mi) | Kilometres (km) |
|---|---|
| 1 | 1.60934 |
| 2 | 3.21869 |
| 3 | 4.82803 |
| 5 | 8.04672 |
| 10 | 16.0934 |
| 20 | 32.1869 |
| 50 | 80.4672 |
| 100 | 160.934 |
| 500 | 804.672 |
| 1,000 | 1,609.34 |
About the units
Kilometres. A kilometre is 1,000 metres, since the prefix kilo means 10³. It is a legal unit in the EU and the measure used for road and map distances. Swedish speed limits are set in kilometres per hour, 50 in built-up areas and 70 outside them. One kilometre is 0.621 miles, a little over six tenths. The names are the real trap: a Swedish mile is 10 kilometres, a statute mile 1.609 kilometres and a nautical mile 1.852 kilometres.
Miles. A mile is 1,760 yards, and since the yard is exactly 0.9144 metres the mile is exactly 1,609.344 metres, or 5,280 feet. It is the unit on road signs and speed limits in the US and the UK, and EU law makes an explicit exception for British and Irish road signs. For trade elsewhere in the EU it may appear only as a supplementary indication. Do not confuse it with the nautical mile of 1,852 metres or the Swedish mile of 10,000 metres.