Home / Length / Convert miles to km
Convert miles to km
Convert mile (mi) to kilometer (km) instantly. Free, no signup, nothing is uploaded — everything runs in your browser.
Mile to Kilometer conversion table
| Mile [mi] | Kilometer [km] |
|---|---|
| 0.01 | 0.01609344 |
| 0.1 | 0.1609344 |
| 1 | 1.609344 |
| 2 | 3.218688 |
| 3 | 4.828032 |
| 5 | 8.04672 |
| 10 | 16.09344 |
| 20 | 32.18688 |
| 50 | 80.4672 |
| 100 | 160.9344 |
| 1,000 | 1,609.344 |
How to convert mile to kilometer
km = miles × 1.60934
Example: 5 mi = 5 × 1.60934 = 8.0467 km
To convert back (kilometer to mile): miles = km ÷ 1.60934
What is a mile?
A mile (mi) is a unit of length in the US customary and imperial systems, defined as exactly 1,609.344 meters.
What is a kilometer?
A kilometer (km) is a unit of length in the metric system, equal to 1,000 meters. The standard unit for road distances in most of the world.
When do you need to convert mile to kilometer?
Driving abroad is the most common reason for miles → km. A US tourist in Europe renting a car sees speed limit signs in km/h and road distances in km; a 50 km/h limit is 31.07 mph, a 200 km drive is 124.27 mi. Without the conversion, misjudging speed or distance is easy.
Running and cycling apps split: Strava in the US defaults to miles, but most international users see km. A 10 km race is 6.21 mi (a common 10K distance); a marathon is 42.195 km = 26.22 mi. Converting splits and paces between the two systems is a daily task for serious runners.
Vehicle specifications and fuel economy cross the units too. A car that does 30 mpg US ≈ 12.75 km/L; a European 5 L/100 km is about 47 mpg US. The reverse conversion matters when comparing a US car to a European spec sheet for import or evaluation.
Frequently asked questions
How many km is 1 mile?
1 mi = 1.609344 km, by exact international definition (the international yard and pound agreement of 1959). The decimal 1.60934 is 5 sig figs; 1.6093 is 4; 1.609 is 3. For typical driving and running use, 1.609 is close enough.
How many miles is 1 km?
1 km = 0.621371 miles. The reverse of the above. So 5 km = 3.107 mi, 10 km = 6.214 mi (a common 10K race), 42.195 km = 26.22 mi (a marathon).
Why is the conversion 1.60934 and not exactly 1.6 or 1.61?
Because the international mile is defined as exactly 1,609.344 meters (or 5,280 feet, with each foot = 0.3048 m). 1 mi = 1,609.344 m = 1.609344 km exactly. Any rounding to 1.6 or 1.61 introduces a small error (0.6% or 0.04% respectively).
Is a nautical mile different?
Yes. A nautical mile is 1,852 m = 1.852 km = 1.1508 mi. It is used for air and sea navigation and is based on one minute of latitude. Use the dedicated km ↔ nautical mile converter for that, not the statute-mile converter on this page.