How to convert hectares to square miles
To convert hectares to square miles, multiply by 0.00386102158542. Area conversions are essential for real estate, flooring, land surveys, farming and map reading.
Hectare to Square Mile conversion table
| Hectare (ha) | Square Mile (mi²) |
|---|---|
| 0.1 ha | 0.000386102158542 mi² |
| 0.5 ha | 0.00193051079271 mi² |
| 1 ha | 0.00386102158542 mi² |
| 2 ha | 0.00772204317085 mi² |
| 3 ha | 0.0115830647563 mi² |
| 4 ha | 0.0154440863417 mi² |
| 5 ha | 0.0193051079271 mi² |
| 10 ha | 0.0386102158542 mi² |
| 20 ha | 0.0772204317085 mi² |
| 25 ha | 0.0965255396356 mi² |
| 50 ha | 0.193051079271 mi² |
| 100 ha | 0.386102158542 mi² |
| 500 ha | 1.93051079271 mi² |
| 1,000 ha | 3.86102158542 mi² |
About the units
Hectare (ha)
A hectare equals 10,000 m² (a 100 m × 100 m square) and is the metric unit for farmland.
Square Mile (mi²)
A square mile equals 640 acres, or about 2.59 square kilometers.
How to use this converter
- Type the number of hectares (ha) in the input box.
- The result in square miles appears instantly — no button needed.
- See the same value in every other area unit just below.
- Use “Swap units” to convert square miles back to hectares.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many square miles are in one hectare?
One hectare equals 0.00386102158542 square miles. 0.00386102158542 is the exact factor used by this converter.
How do I convert hectares to square miles?
Multiply the value in hectares by 0.00386102158542. To go the other way, multiply square miles by 258.998811034.
What is 10 ha in mi²?
10 ha = 0.0386102158542 mi². Also, 5 ha = 0.0193051079271 mi² and 100 ha = 0.386102158542 mi².
What is the difference between a hectare and a square mile?
A hectare equals 10,000 m² (a 100 m × 100 m square) and is the metric unit for farmland. A square mile equals 640 acres, or about 2.59 square kilometers.
Is this tool free and private?
Yes — the Hectare to Square Mile is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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