Kilometres to miles converter
Type a distance in kilometres and see at once how many miles that is. With the option above the field, the tool also converts from miles to kilometres.
In kilometres or in miles, depending on your choice. 1 mile is 1.609344 km.
Fill in the fields; the answer appears here straight away.
How it's worked out
How it works
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Enter the values
Type the numbers or the formula. Decimals may use a point or a comma. No idea? Click Fill in an example.
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Instant answer
The answer appears as you type, with the most important intermediate values.
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See the working
Under "How it's worked out" you see the steps, handy for checking your own calculation.
The formula
One mile is exactly 1.609344 kilometres. So:
- km to miles: divide by 1.609344 (or multiply by 0.621371)
- miles to km: multiply by 1.609344
10 km is 10 ÷ 1.609344 = 6.2137 miles. This is the international mile, as used in the United States and the United Kingdom. A nautical mile (1.852 km) is something else.
Conversion table
| km | mi |
|---|---|
| 1 km | 0.62 mi |
| 5 km | 3.11 mi |
| 10 km | 6.21 mi |
| 21.1 km | 13.11 mi |
| 42.2 km | 26.22 mi |
| 50 km | 31.07 mi |
| 100 km | 62.14 mi |
| 200 km | 124.27 mi |
| 500 km | 310.69 mi |
| 1,000 km | 621.37 mi |
A rule of thumb
Multiply the kilometres by 0.6 for a quick estimate of the miles: 100 km is about 60 miles (exactly 62.1). A marathon of 42.195 km is 26.2 miles.
Race distances
| Race | Kilometres | Miles |
|---|---|---|
| 5K | 5 | 3.11 |
| 10K | 10 | 6.21 |
| Half marathon | 21.0975 | 13.11 |
| Marathon | 42.195 | 26.22 |
Road trips
A drive of 300 miles in the US is 482.8 km. A UK sign that says 60 miles is 96.6 km away, and 100 miles is 160.9 km. For a long trip, the fuel for it is in litres to gallons, since US fuel is sold per gallon.
Pace per mile
Runners in the US and UK often use minutes per mile. To convert, multiply the pace by 1.609344 (km to mile) or divide by it (mile to km). A 4:00 per km pace is 6:26 per mile, and 8:00 per mile is 4:58 per km. For the speed of the same run, use the km/h to mph converter, and for the time between two race dates the days between dates calculator.
Frequently asked questions
How many kilometres are in a mile?
Exactly 1.609344. That is the international mile, defined in 1959, and the same in the United States and the United Kingdom.
Is a nautical mile the same?
No. A nautical mile is 1.852 km, used at sea and in the air. 10 nautical miles is 18.52 km, but 10 statute miles is 16.09 km.
How do I convert a running pace per kilometre?
Multiply the minutes per kilometre by 1.609344. A pace of 5:30 per km is 5.5 × 1.609344 ≈ 8.85 minutes, which is 8:51 per mile.
Why does my road sign in the US not match my car?
US road signs and speedometers use miles, and a rental car shows mph and miles on the odometer. For speeds, use the [km/h to mph converter](/en/math/kmh-to-mph-converter).