square miles to square kilometers
Convert square mile to square kilometer — instant, free, with the formula shown.
1 mi²=2.589988 km²
How to convert square mile to square kilometer
To convert square mile to square kilometer, multiply by 2.58998811:
km² = mi² × 2.58998811
For example, 10 mi² × 2.589988 = 25.899881 km².
mi² to km² conversion table
| square miles (mi²) | square kilometers (km²) |
|---|---|
| 1 mi² | 2.589988 km² |
| 2 mi² | 5.179976 km² |
| 5 mi² | 12.949941 km² |
| 10 mi² | 25.899881 km² |
| 25 mi² | 64.749703 km² |
| 50 mi² | 129.499406 km² |
| 100 mi² | 258.998811 km² |
| 250 mi² | 647.497028 km² |
| 500 mi² | 1294.994055 km² |
| 1000 mi² | 2589.98811 km² |
Other square mile conversions
Convert to square kilometer from another unit
mi² to km² — frequently asked
How many square kilometers are in 1 square mile?
1 square mile = 2.589988 square kilometers (mi² × 2.589988 = km²).
What is the formula to convert square mile to square kilometer?
Multiply your square mile value by 2.58998811 to get square kilometer.
How do I convert 10 square miles to square kilometers?
10 mi² = 25.899881 km². For 100 mi² the answer is 258.998811 km². Use the calculator on this page for any other value.