Free online converter from square miles to hectares. Type a value to get an instant result, check the formula and use the quick reference table below.
| square miles (mi²) | hectares (ha) |
|---|---|
| 1 | 258.999 |
| 2 | 517.998 |
| 5 | 1294.99 |
| 10 | 2589.99 |
| 20 | 5179.98 |
| 50 | 12949.9 |
| 100 | 25899.9 |
| 250 | 64749.7 |
| 500 | 129499 |
| 1000 | 258999 |
1 mi² = 258.999 ha.
Multiply the value in square miles by 258.999 to get hectares.