Miles to Kilometers Converter
Convert miles (mi) to kilometers (km). One mile equals 1.60934 kilometers, so multiply a value in miles by 1.60934 to get kilometers.
Formula: multiply the source value by 1.609344
Quick Conversions
About this tool
The international mile is exactly 1,609.344 meters (5,280 feet). A kilometer is exactly 1,000 meters. Because 1 mile is 1,609.344 meters and 1 kilometer is 1,000 meters, the factor is their ratio, 1.609344.
How to use it
- Type a value in miles in the first field. The unit menus start on mi → km.
- Read the result in kilometers. It updates as you type; use Precision to choose how many decimals are shown.
- Press the swap button, or open the Kilometers to Miles converter, to convert kilometers back to miles.
km = mi × 1.609344
mi = km ÷ 1.609344
Examples
1 mi to km
1 mi × 1.60934 = 1.60934 km.
26.2 mi to km (a marathon, rounded)
26.2 mi × 1.60934 = 42.1648 km.
100 mi to km
100 mi × 1.60934 = 160.934 km.
Miles to kilometers conversion table
| Miles (mi) | Kilometers (km) |
|---|---|
| 1 | 1.60934 |
| 2 | 3.21869 |
| 3 | 4.82803 |
| 4 | 6.43738 |
| 5 | 8.04672 |
| 10 | 16.0934 |
| 15 | 24.1402 |
| 20 | 32.1869 |
| 25 | 40.2336 |
| 50 | 80.4672 |
| 100 | 160.934 |
| 250 | 402.336 |
| 500 | 804.672 |
| 1,000 | 1,609.34 |
Kilometers to miles (reverse)
| Kilometers (km) | Miles (mi) |
|---|---|
| 1 | 0.621371 |
| 5 | 3.10686 |
| 10 | 6.21371 |
| 50 | 31.0686 |
| 100 | 62.1371 |
FAQ
How many kilometers are in one mile?
One mile is 1.60934 kilometers. The unrounded factor is 1.609344.
How do I convert kilometers back to miles?
Divide by 1.60934, or multiply by 0.621371. For example, 10 km is 6.21371 mi.
Is this the statute mile or the nautical mile?
The international statute mile, 1,609.344 m. A nautical mile is 1,852 m and is used with knots at sea and in aviation.
Is the conversion exact?
Yes, before rounding. Both units are defined exactly in meters, so the only difference comes from how many decimals you choose to display.