How many hectare are in one acre?
One acre is 0.4047 ha.
Acre to Hectare
Type a value to convert it from acre to hectare. One ac equals 0.4047 ha.
Result
Acre and Hectare, side by side
One acre is 0.4047 ha. In the other direction, one hectare is 2.471 ac.
The factor is exact rather than rounded: the imperial units have been defined from the metric ones since 1959, so the conversion introduces no error of its own. What you see below is arithmetic, not an approximation.
| Acre | Hectare |
|---|---|
| 1 | 0.404686 |
| 10 | 4.04686 |
| 50 | 20.2343 |
| 100 | 40.4686 |
| 500 | 202.343 |
| 1000 | 404.686 |
Frequently asked questions
How do I convert hectare back to acre?
One hectare is 2.471 ac. The tool above converts in both directions.
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