Free instant mi² → km² converter. No signup, no uploads — everything is calculated privately in your browser.
1 mi² = 2.58999 square kilometers
1 square miles = 2.58999 square kilometers
Free, instant, and 100% private — every calculation runs in your browser. Nothing is uploaded.
1 square mile equals 2.58999 square kilometers. To convert square miles to square kilometers, multiply the value by 2.5899881103360003.
1 square mile = 2.58999 square kilometers. Formula: value × 2.5899881103360003
Example: 1 mi² → 2.58999 km². Type any value in the converter above to see it converted live.
| 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 |
| 25 mi² | 64.7497 km² |
| 50 mi² | 129.499 km² |
| 100 mi² | 258.999 km² |
| 250 mi² | 647.497 km² |
| 500 mi² | 1,294.99 km² |
| 1,000 mi² | 2,589.99 km² |
1 square mile = 2.58999 square kilometers. Formula: value × 2.5899881103360003. Enter the value above and the result appears instantly — the calculation runs entirely in your browser.
Exactly: 1 square mile = 2.5899881103360003 square kilometers. The reverse factor is 1 square kilometer = 0.38610215854244584 square miles.
1 mi² = 2.58999 km²; 10 mi² = 25.8999 km²; 100 mi² = 258.999 km². Use the full conversion table below for more reference values.
A hectare is metric and equals exactly 10,000 m² (100 m × 100 m). An acre is 4,046.8564224 m², or 43,560 sq ft. That makes 1 hectare = 2.47105 acres. Land in the US is usually listed in acres; most other countries use hectares.