Square Miles to Square Kilometers
Convert square miles to square kilometers instantly — type a value, get the answer.
Square Kilometers2.5900km²
Multiply square miles by 2.589988 to get square kilometers. 1 mi² = 2.589988 km².
| Square Miles (mi²) | Square Kilometers (km²) |
|---|---|
| 1 mi² | 2.59 km² |
| 2 mi² | 5.18 km² |
| 5 mi² | 12.9499 km² |
| 10 mi² | 25.8999 km² |
| 25 mi² | 64.7497 km² |
| 50 mi² | 129.4994 km² |
| 100 mi² | 258.9988 km² |
Common square miles-to-square kilometers conversions, rounded to 4 decimals.
How to convert square miles to square kilometers
Multiply the number of square miles by 2.589988. For example, 10 mi² × 2.589988 = 25.8999 km². The converter above does this for any value instantly, and the table below lists the conversions people look up most.
Converting square kilometers back to square miles
To go the other way, divide the km² value by 2.589988 — or multiply by 0.3861. So 1 km² ≈ 0.3861 mi².
Questions
How many square kilometers are in a square mile?
One square mile equals 2.589988 square kilometers. Multiply any mi² figure by 2.589988 to convert it to km².
How do I convert square kilometers back to square miles?
Divide the km² value by 2.589988, or multiply by 0.3861. For example, 5 km² ≈ 1.9305 mi².
What is 10 mi² in km²?
10 mi² = 25.8999 km². Type any value into the converter above to see its square kilometers equivalent.