Convert Square Mile to Hectare
Use this free converter to change square miles (mi²) into hectares (ha). Square mile and hectare both measure area. As a quick reference, 1 mi² equals 258.99881 ha, and 1 ha equals 0.0038610216 mi².
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Hectare (ha)
258.99881
1 mi² = 258.99881 ha
Area conversion table
| Square Mile | Hectare |
|---|---|
| 0.01 | 2.5899881 |
| 0.1 | 25.899881 |
| 0.5 | 129.49941 |
| 1 | 258.99881 |
| 2 | 517.99762 |
| 3 | 776.99643 |
| 5 | 1294.9941 |
| 10 | 2589.9881 |
| 20 | 5179.9762 |
| 25 | 6474.9703 |
| 50 | 12949.941 |
| 100 | 25899.881 |
| 1,000 | 258998.81 |
How to convert Square Mile to Hectare
Multiply the square mile value by 258.99881 to get hectares.
- Enter the number of square miles you want to convert.
- The converter instantly shows the equivalent value in hectares.
- Worked example: 15 mi² × 258.99881 = 3884.9822 ha.
- Use the swap button to reverse the conversion (hectare to square mile).
About these units
Square Mile (mi²)
- Definition
- A square mile (mi²) is the area of a square one mile on each side, about 2.59 square kilometers.
- History
- It derives from the statute mile of English origin.
- Current use
- Square miles express land area and population density in the US and UK.
Hectare (ha)
- Definition
- A hectare (ha) is a metric unit of area equal to 10,000 square meters, or about 2.47 acres.
- History
- It was introduced with the metric system as a practical unit for land.
- Current use
- Hectares are the standard unit for farmland and land area in most of the world.
Frequently asked questions
How many hectares are in a square mile?
There are 258.99881 ha in 1 mi². To convert, multiply the number of square miles by 258.99881.
How do I convert square miles to hectares?
Multiply the square mile value by 258.99881 to get hectares. For example, 10 mi² = 2589.9881 ha.
Is this square mile-to-hectare converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Square Mile to other area units
| Unit | 1 Square Mile equals |
|---|---|
| Square Meter (m²) | 2589988.1 m² |
| Square Kilometer (km²) | 2.5899881 km² |
| Square Centimeter (cm²) | 25899881000 cm² |
| Square Yard (yd²) | 3097600 yd² |
| Square Foot (ft²) | 27878400 ft² |
| Square Inch (in²) | 4014489600 in² |
| Acre (ac) | 640 ac |
| Hectare (ha) | 258.99881 ha |