Convert acres to hectares instantly. Type a value below to see the result, or press Swap direction to convert hectares back to acres. The tool uses the exact conversion factor, and a quick-reference table is below.
Hectares
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Conversion formula
Hectares = acres × 0.404686
One acre is about 0.405 hectares, and one hectare is about 2.47 acres. A square mile is 640 acres.
Quick reference table
| Acres (ac) | Hectares (ha) |
|---|---|
| 0.5 ac | 0.202343 ha |
| 1 ac | 0.404686 ha |
| 2 ac | 0.809371 ha |
| 5 ac | 2.02343 ha |
| 10 ac | 4.04686 ha |
| 20 ac | 8.09371 ha |
| 50 ac | 20.2343 ha |
| 100 ac | 40.4686 ha |
| 250 ac | 101.171 ha |
| 640 ac | 258.999 ha |
Frequently asked questions
How do I convert acres to hectares?
Hectares = acres × 0.404686
How do I convert hectares back to acres?
Use the reverse formula, or press Swap direction in the converter above. You can also use our reverse converter.
How many hectares is 10 acres?
10 acres is about 4.05 hectares.
More free tools: Reverse converter · Unit converter · All free tools
Conversions use standard factors. Check critical measurements.