ManyConvert miles to km
1 mile = 1.609344 kilometers. Type a value below for an instant miles to km conversion, or use the table for common values.
| Miles | Kilometers |
|---|---|
| 1 mi | 1.609344 km |
| 2 mi | 3.218688 km |
| 3 mi | 4.828032 km |
| 4 mi | 6.437376 km |
| 5 mi | 8.04672 km |
| 10 mi | 16.09344 km |
| 15 mi | 24.14016 km |
| 20 mi | 32.18688 km |
| 25 mi | 40.2336 km |
| 30 mi | 48.28032 km |
| 40 mi | 64.37376 km |
| 50 mi | 80.4672 km |
| 75 mi | 120.7008 km |
| 100 mi | 160.9344 km |
How miles convert to kilometres
The mile is defined as exactly 1.609344 kilometres, so km = miles × 1.609344.
In your head: multiply by 8 and divide by 5, or add 60%. For 50 miles, half again is 75 and a tenth more is 80 km; the exact answer is 80.47.
Speed limits in miles per hour
If you are driving in the United States or the United Kingdom in a car that shows kilometres, or reading a foreign road sign, these are the figures you meet.
| mph | km/h | mph | km/h |
|---|---|---|---|
| 20 | 32 | 55 | 89 |
| 30 | 48 | 60 | 97 |
| 40 | 64 | 70 | 113 |
| 50 | 80 | 75 | 121 |
Where the odd number comes from
A mile is 5,280 feet, or 1,760 yards. The figure goes back to English law in 1593, which set the mile at eight furlongs, a furlong being the length of a ploughed furrow. With the foot fixed at 0.3048 m, the mile works out at 1,609.344 m exactly.
Miles that are not this mile
The nautical mile used by ships and aircraft is 1.852 km, about 15% longer; a knot is one nautical mile per hour. Do not use the road-mile factor for a sailing distance or an aircraft's range.
Fuel economy needs care
Miles per gallon does not convert to litres per 100 km by multiplying, because one is distance per fuel and the other is fuel per distance. Divide 235.2 by the US mpg figure: 30 mpg is 7.8 L/100 km. The Fuel Cost Calculator accepts either unit directly. A marathon, 26.2 miles, is 42.2 km, and a 10-mile run is 16.1 km.
Convert miles to km quickly and accurately with this free tool. 1 mile = 1.609344 kilometers. Need the other direction? Kilometers to Miles. For every other unit, use the full ManyHand Unit Converter.
How do I convert miles to km?
Multiply the number of miles by 1.609344. For example, 10 mi = 16.09344 km. You can also type any value in the converter above.
What is 1 mile in kilometers?
1 mile equals 1.609344 kilometers. Conversely, 1 kilometer equals 0.6213712 miles.
Is this miles to km converter free?
Yes. It's free with no sign-up, works on phone and desktop, and runs entirely in your browser.