Miles to kilometres
Multiply miles by 1.6093 to get kilometres.
10 mi = 16.0934 km
How to convert miles to kilometres
The kilometre is one thousand metres (10³ m). The mile is exactly 1609.344 metres (5280 feet), the international mile.
Worked example — 10 mi: 10 × 1.6093 = 16.0934 km.
Miles to kilometres table
| Miles | Kilometres |
|---|---|
| 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 |
| 26.2 mi | 42.1648 km |
| 50 mi | 80.4672 km |
| 100 mi | 160.9344 km |
Reverse and related
About miles and kilometres
Mile (mi)
1 mi = 1.6093 kmDefinition. Exactly 1609.344 metres (5280 feet), the international mile
History and origin
The mile comes from the Roman mille passus, a thousand paces, and became the English statute mile of 5280 feet in 1593. Through the 1959 agreement it is exactly 1609.344 metres.
Current use
The mile is the main unit for road distances and speed limits in the United States and United Kingdom, and for running events like the mile and the marathon.
Source: International Yard and Pound Agreement (1959); NIST Handbook 44, App. C
Kilometre (km)
1 km = 0.621371 miDefinition. One thousand metres (10³ m)
History and origin
The kilometre, one thousand metres, was defined along with the metric system in the 1790s as its unit for long distances. It spread across the world with the metric system through the nineteenth and twentieth centuries.
Current use
Kilometres are the standard unit for road distances and running races in most of the world; the United States and United Kingdom still post road distances in miles.
Source: BIPM, The International System of Units (SI), 9th ed. (2019)
Where people use this
Miles: road distances in the US and UK, running. Kilometres: road distances, running races. A 26.2-mile marathon is 42.2 km.
Every value is carried to full double precision; the display is rounded.
Sources: BIPM, The International System of Units (SI), 9th ed. (2019); International Yard and Pound Agreement (1959); NIST Handbook 44, App. C.
Questions people ask
How many km is 1 mile?
One mile is exactly 1.609344 km. To convert miles to km, multiply by 1.609.
How many km is 5 miles?
5 miles is about 8.05 km, and 10 miles is about 16.1 km.
How many km is a half marathon?
A 13.1-mile half marathon is about 21.1 km; a full marathon is 26.2 miles, or 42.2 km.
How do you convert miles to km?
Multiply the miles by 1.609. A rough estimate is to add about 60% to the number.