Square miles to Square kilometers Converter
Convert square miles (mi²) to square kilometers (km²) instantly. 1 square mile = 2.59 square kilometers.
How to convert square miles to square kilometers
km² = mi² × 2.59
To convert square miles to square kilometers, multiply the area value by 2.59. One square mile (mi²) is equal to 2.59 square kilometers (km²). For quick everyday conversions, the interactive converter above gives you the exact result as you type — no rounding surprises.
Square miles to Square kilometers conversion table
| Square miles (mi²) | Square kilometers (km²) |
|---|---|
| 1 mi² | 2.59 km² |
| 2 mi² | 5.18 km² |
| 3 mi² | 7.77 km² |
| 4 mi² | 10.36 km² |
| 5 mi² | 12.9499 km² |
| 6 mi² | 15.5399 km² |
| 7 mi² | 18.1299 km² |
| 8 mi² | 20.7199 km² |
| 9 mi² | 23.3099 km² |
| 10 mi² | 25.8999 km² |
| 15 mi² | 38.8498 km² |
| 20 mi² | 51.7998 km² |
| 25 mi² | 64.7497 km² |
| 50 mi² | 129.4994 km² |
| 100 mi² | 258.9988 km² |
Frequently asked questions
How many square kilometers are in 1 square mile?
1 square mile equals 2.59 square kilometers.
How do I convert square miles to square kilometers?
Multiply the number of square miles by 2.59. For example, 8 mi² × 2.59 = 20.7199 km².
What is 8 square miles in square kilometers?
8 square miles is equal to 20.7199 square kilometers.
Can I convert square kilometers back to square miles?
Yes — use our Square kilometers to Square miles converter, or divide by 2.59.