Acres to Hectares Converter
Convert acres to hectares instantly. 1 ac = 0.404686 ha. Free two-way converter with the formula and a quick reference table.
How to convert acres to hectares
hectares = acres × 0.404686
One acre equals 0.404686 hectares, so to convert acres to hectares you multiply by 0.404686. Going the other way, one hectare is 2.4711 acres. Both units measure area, so the conversion is an exact ratio that never changes.
10 acres = 4.0469 hectares. Multiply your acre figure by the factor above (or just type it into the box) to convert any amount.
Need the other direction? hectares to acres
acres to hectares table
| acres (ac) | hectares (ha) |
|---|---|
| 1 | 0.404686 |
| 2 | 0.809371 |
| 3 | 1.2141 |
| 5 | 2.0234 |
| 10 | 4.0469 |
| 20 | 8.0937 |
| 25 | 10.1171 |
| 50 | 20.2343 |
| 100 | 40.4686 |
| 250 | 101.17 |
| 500 | 202.34 |
| 1,000 | 404.69 |
Frequently asked questions
How many hectares are in a acre?
One acre equals 0.404686 hectares. So to convert, multiply the number of acres by 0.404686.
How do I convert acres to hectares?
Multiply by 0.404686, or simply enter the value in the converter above — it does the math instantly and works both ways.
Is this conversion exact?
Yes — both units measure the same quantity, so the ratio is fixed and this uses the standard internationally-agreed factor.