Instantly convert acres (ac) to hectares (ha). Bidirectional, accurate, and free.
To convert acres to hectares, use the formula hectares = acres × 0.4047. For example, 2 acres equals 0.8094 hectares. Type any number into the calculator above and the result appears instantly — you can also type into the hectares box to convert the other way.
| Acres | Hectares |
|---|---|
| 1 ac | 0.4047 ha |
| 5 ac | 2.0234 ha |
| 10 ac | 4.0469 ha |
| 25 ac | 10.1171 ha |
| 50 ac | 20.2343 ha |
| 100 ac | 40.4686 ha |
| 250 ac | 101.17 ha |
| 500 ac | 202.34 ha |
There are 0.4047 hectares in one acre. To convert any value, apply the formula hectares = acres × 0.4047.
The formula is hectares = acres × 0.4047. Enter a value above and the result updates instantly in both directions.
Yes. It uses the exact internationally-defined conversion factor, so results match official standards to several decimal places.
Yes — the converter is bidirectional. Type in either box and the other updates automatically using the inverse formula.