To convert square miles to square kilometers, multiply the value by 2.58999. To go the other way, multiply square kilometers by 0.386102 to get square miles.
| Square Miles (mi²) | Square Kilometers (km²) |
|---|---|
| 1 mi² | 2.58999 km² |
| 2 mi² | 5.17998 km² |
| 5 mi² | 12.9499 km² |
| 10 mi² | 25.8999 km² |
| 20 mi² | 51.7998 km² |
| 50 mi² | 129.499 km² |
| 100 mi² | 258.999 km² |
| 500 mi² | 1,294.99 km² |
| 1,000 mi² | 2,589.99 km² |
Square mile (mi²). A square mile is 640 acres (2.58999 km²).
Square kilometer (km²). A square kilometer is one million square meters (100 hectares), used for countries, cities and lakes.
There are 2.58999 square kilometers in one square mile.
Multiply the number of square miles by 2.58999. For example, 10 square miles equal 25.8999 square kilometers.
One square kilometer equals 0.386102 square miles.