Square Miles to Hectares Converter
CommonSquare meters, acres, hectares and more.
How to convert Square Miles to Hectares
Multiply the square miles value by 258.999: 1 mi² = 258.999 ha. Going the other way, 1 ha = 0.00386102 mi², so divide by 258.999 or use the Hectares to Square Miles converter.
About these units
Square Miles (mi²)
A square mile is 640 acres, about 2.59 square kilometers. It is used for land areas in the United States.
Hectares (ha)
A hectare is 10,000 square meters, the area of a square 100 meters on each side, about 2.471 acres. Farmland and forests are commonly measured in hectares.
Square Miles to Hectares conversion table
| Square Miles (mi²) | Hectares (ha) |
|---|---|
| 1 mi² | 258.999 ha |
| 2 mi² | 517.998 ha |
| 3 mi² | 776.996 ha |
| 4 mi² | 1,036 ha |
| 5 mi² | 1,294.99 ha |
| 10 mi² | 2,589.99 ha |
| 20 mi² | 5,179.98 ha |
| 25 mi² | 6,474.97 ha |
| 50 mi² | 12,949.9 ha |
| 100 mi² | 25,899.9 ha |
| 500 mi² | 129,499 ha |
| 1,000 mi² | 258,999 ha |
More square miles conversions
- Square Miles to Square Feet1 mi² = 2.7878e+7 ft²
- Square Miles to Square Inches1 mi² = 4.0145e+9 in²
- Square Miles to Square Yards1 mi² = 3.0976e+6 yd²
- Square Miles to Acres1 mi² = 639.999 ac
- Square Miles to Roods1 mi² = 2,560.01 rd
- Square Miles to Square Meters1 mi² = 2.59e+6 m²
- Square Miles to Dunams1 mi² = 2,589.99 dunam
See every unit on the Area Converter.