Convert square miles to hectares quickly and accurately using this free online converter
Used for land area, room size, and real estate measurements.
💡 Square meters are standard internationally; square feet are used in the US.
ha = mi² × 258.9988
Example: 1 mi² × 258.9988 = 258.9988 ha
Use square meters internationally; square feet for US properties.
Common uses: real estate, land measurement, and floor plans.
How do I convert mi² to ha?
Multiply the value in Square Miles by 258.9988. For example: 10 mi² = 2589.9881 ha.
When should I use Hectares instead of Square Miles?
Use square meters internationally; square feet for US properties.
Is this converter accurate?
Yes. We use internationally recognized conversion factors, updated to current standards.
| Square Miles (mi²) | Hectares (ha) |
|---|---|
| 1 mi² | 258.9988 ha |
| 5 mi² | 1294.9941 ha |
| 10 mi² | 2589.9881 ha |
| 25 mi² | 6474.9703 ha |
| 50 mi² | 12,949.94 ha |
| 100 mi² | 25,899.88 ha |
| 500 mi² | 129,499.41 ha |
| 1000 mi² | 258,998.81 ha |