To convert square miles to hectares, multiply the value by 258.999. To go the other way, multiply hectares by 0.00386102 to get square miles.
| Square Miles (mi²) | Hectares (ha) |
|---|---|
| 1 mi² | 258.999 ha |
| 2 mi² | 517.998 ha |
| 5 mi² | 1,294.99 ha |
| 10 mi² | 2,589.99 ha |
| 20 mi² | 5,179.98 ha |
| 50 mi² | 12,949.9 ha |
| 100 mi² | 25,899.9 ha |
| 500 mi² | 129,499 ha |
| 1,000 mi² | 258,999 ha |
Square mile (mi²). A square mile is 640 acres (2.58999 km²).
Hectare (ha). A hectare is 10,000 square meters (100 m × 100 m), the world's standard unit for farmland and large plots.
There are 258.999 hectares in one square mile.
Multiply the number of square miles by 258.999. For example, 10 square miles equal 2,589.99 hectares.
One hectare equals 0.00386102 square miles.