acres to hectares Converter
1 acre = 0.40469 ha. Enter a value. The result updates immediately.
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Accuracy and rounding
Useful for rooms, land, materials, and drawings. Area conversions square the length factor, so they are not the same as length conversions.
Area units are derived from fixed length definitions. The factor is squared, so area conversions are not the same as length conversions.
For rooms and land, round after multiplying by quantity or price. Small rounding errors can grow on large areas.
How to convert acres to hectares
- Enter the value in acres.
- Select acres as the source unit.
- Select hectares as the target unit.
- Read or copy the result.
acres to hectares chart
| acres | hectares |
|---|---|
| 1 acre | 0.40469 ha |
| 2 acre | 0.80937 ha |
| 5 acre | 2.0234 ha |
| 10 acre | 4.0469 ha |
| 25 acre | 10.1171 ha |
| 50 acre | 20.2343 ha |
| 100 acre | 40.4686 ha |
Formula
ha = acre x 0.40468564224
Example: 1 acre = 0.40469 ha.
Source
Area units derived from exact length definitions; acre and hectare factors are fixed.
Common questions
How do I convert acres to hectares?
Enter the acres value in the converter, or multiply by the factor shown in the formula. 1 acre = 0.40469 ha.
What should I watch out for?
Area conversions square the length relationship, so they are different from plain length conversions.
Where does this area conversion come from?
Area units derived from exact length definitions; acre and hectare factors are fixed. ConverterBase uses stable definitions and fixed conversion factors, not live or rounded market data.