How to convert hectares to acres
ac = ha × 2.471053815Multiply the value in hectares by 2.471053815. To go the other way, multiply by 0.4046856422 (or divide by 2.471053815).
A hectare is larger than an acre: one hectare contains 2.471053815 acres.
Worked examples
- 1 hectare1 ha × 2.471053815 = 2.471053815 ac
- 5 hectares5 ha × 2.471053815 = 12.35526907 ac
- 10 hectares10 ha × 2.471053815 = 24.71053815 ac
- 20 hectares20 ha × 2.471053815 = 49.42107629 ac
- 100 hectares100 ha × 2.471053815 = 247.1053815 ac
Hectares to acres conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Hectares (ha) | Acres (ac) |
|---|---|
| 0.1 ha | 0.24710538 ac |
| 0.25 ha | 0.61776345 ac |
| 0.5 ha | 1.2355269 ac |
| 1 ha | 2.4710538 ac |
| 2 ha | 4.9421076 ac |
| 3 ha | 7.4131614 ac |
| 4 ha | 9.8842153 ac |
| 5 ha | 12.355269 ac |
| 6 ha | 14.826323 ac |
| 7 ha | 17.297377 ac |
| 8 ha | 19.768431 ac |
| 9 ha | 22.239484 ac |
| 10 ha | 24.710538 ac |
| Hectares (ha) | Acres (ac) |
|---|---|
| 12 ha | 29.652646 ac |
| 15 ha | 37.065807 ac |
| 20 ha | 49.421076 ac |
| 25 ha | 61.776345 ac |
| 30 ha | 74.131614 ac |
| 40 ha | 98.842153 ac |
| 50 ha | 123.55269 ac |
| 75 ha | 185.32904 ac |
| 100 ha | 247.10538 ac |
| 250 ha | 617.76345 ac |
| 500 ha | 1,235.5269 ac |
| 1,000 ha | 2,471.0538 ac |
About the units
Hectare (ha)
Exactly 10,000 m² — a square 100 m on a side, about 2.47 acres. The standard unit for farmland and forestry worldwide.
Acre (ac)
43,560 ft² (4,046.8564224 m²). Historically the land one ox team could plough in a day; still the US and UK unit for land parcels.
Frequently asked questions
How many acres are in one hectare?
There are 2.471053815 acres in one hectare, and this value is exact by definition.
How do I convert hectares to acres?
Multiply the number of hectares by 2.471053815. For example, 10 ha × 2.471053815 = 24.71053815 ac.
How many hectares are in one acre?
One acre equals 0.4046856422 hectares. That is the reverse factor, 1 ÷ 2.471053815.
What is 10 hectares in acres?
10 ha = 24.71053815 ac.
Is this ha to ac converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.