Convert Square Miles to Hectares
1 square mile = 258.998811 hectares. Type any value below to convert in either direction — the calculation happens in your browser.
Square Miles to Hectares formula
Multiply the number of square miles by 258.998811 to get hectares.
hectares = square miles × 258.998811To go the other way: divide the number of hectares by 258.998811, or multiply by 0.003861022.
square miles = hectares ÷ 258.998811Square Miles to Hectares conversion table
| Square Miles | Hectares |
|---|---|
| 1 mi² | 258.998811 ha |
| 2 mi² | 517.997622 ha |
| 3 mi² | 776.996433 ha |
| 4 mi² | 1,035.995 ha |
| 5 mi² | 1,294.994 ha |
| 6 mi² | 1,553.993 ha |
| 7 mi² | 1,812.992 ha |
| 8 mi² | 2,071.99 ha |
| 9 mi² | 2,330.989 ha |
| 10 mi² | 2,589.988 ha |
| 15 mi² | 3,884.982 ha |
| 20 mi² | 5,179.976 ha |
| 25 mi² | 6,474.97 ha |
| 30 mi² | 7,769.964 ha |
| 40 mi² | 10,359.95 ha |
| 50 mi² | 12,949.94 ha |
| 75 mi² | 19,424.91 ha |
| 100 mi² | 25,899.88 ha |
| 250 mi² | 64,749.7 ha |
| 500 mi² | 129,499.4 ha |
| 1,000 mi² | 258,998.8 ha |
Hectares to Square Miles conversion table
| Hectares | Square Miles |
|---|---|
| 1 ha | 0.003861022 mi² |
| 2 ha | 0.007722043 mi² |
| 3 ha | 0.01158306 mi² |
| 4 ha | 0.01544409 mi² |
| 5 ha | 0.01930511 mi² |
| 6 ha | 0.02316613 mi² |
| 7 ha | 0.02702715 mi² |
| 8 ha | 0.03088817 mi² |
| 9 ha | 0.03474919 mi² |
| 10 ha | 0.03861022 mi² |
About the square mile
A square mile is about 2.59 square kilometres and is used for US counties, states and land surveys.
About the hectare
A hectare is 10,000 square metres, the metric unit for agricultural land, equal to about 2.47 acres.
Frequently asked questions
How many hectares are in a square mile?
There are 258.998811 hectares in one square mile.
How many square miles are in a hectare?
There are 0.003861022 square miles in one hectare.
Is this conversion exact?
The ratio between the square mile and the hectare is fixed by definition, so the conversion is exact — the figures shown here are rounded for readability only.
What is 10 square miles in hectares?
10 square miles equals 2,589.988 hectares.
Related area conversions
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- Square Miles to Square Kilometers
- Square Miles to Square Centimeters
- Square Miles to Square Yards
- Square Miles to Square Feet
- Square Miles to Square Inches
- Square Miles to Acres
- Square Yards to Hectares
- Square Feet to Hectares
- Square Inches to Hectares
- Acres to Hectares