Square miles to Square kilometers – square mile to square kilometer Converter
1 mi² = 2.589988110336 km²
Formula
km² = mi² × 2.589988110336
Square miles to square kilometers conversion table
| square miles (mi²) | square kilometers (km²) |
|---|---|
| 0.25 mi² | 0.647497 km² |
| 0.5 mi² | 1.29499 km² |
| 1 mi² | 2.589988110336 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 |
| 200 mi² | 517.998 km² |
| 500 mi² | 1294.99 km² |
| 1000 mi² | 2589.99 km² |
| 2500 mi² | 6474.97 km² |
| 5000 mi² | 12949.9 km² |
| 10000 mi² | 25899.9 km² |
Square miles and square kilometers are both area units. One square mile equals 2.589988110336 square kilometers; enter any value above for an instant result, or use the table for common conversions.
Sanity-check examples
1 mi² = 2.58999 km²10 mi² = 25.8999 km²2.5 mi² = 6.47497 km²
Common pitfalls and look-alike units
The mu is a Chinese market unit: 1 mu = 666.667 m² (about 666.67), not to be confused with the acre (≈ 4046.86 m²) or the hectare (10000 m² = 15 mu). Confirm which unit a land figure uses before converting.
Frequently asked questions
How many square kilometers are in a square mile?
1 square mile (mi²) equals 2.589988110336 square kilometer (km²).
How do I convert square miles to square kilometers?
Multiply the square mile value by 2.589988110336 to get square kilometer — for example, 2 square miles = 5.17998 square kilometer.
How do I convert square kilometers back to square miles?
1 square kilometer is approximately 0.386102 square mile. Use the swap button or the reverse conversion page linked on this page.