Area conversion
Hectares to acres converter
Convert hectares to acres using the exact NIST-based acre definition.
Quick farm area converter
Uses exact NIST-based area constants.
Exact conversion
The factor is the ratio of exact definitions: 1 ha = 10,000 m² and 1 acre = 4,046.8564224 m². For the reverse direction, 1 acre = 0.40468564224 hectares exactly.
Common hectare to acre values
| Hectares | Acres | Square feet |
|---|---|---|
| 0.1 | 0.247105 | 10,764 |
| 0.25 | 0.617763 | 26,910 |
| 0.5 | 1.235527 | 53,820 |
| 1 | 2.471054 | 107,639 |
| 2 | 4.942108 | 215,278 |
| 5 | 12.355269 | 538,196 |
| 10 | 24.710538 | 1,076,391 |
| 20 | 49.421076 | 2,152,782 |
| 50 | 123.552691 | 5,381,955 |
| 100 | 247.105381 | 10,763,910 |
| 500 | 1,235.526907 | 53,819,552 |
Worked examples
A 100-hectare European farm is 100 × 2.4710538 ≈ 247.11 acres. A 25-hectare parcel is about 61.78 acres.
To go from hectares to square feet, multiply the acre result by 43,560: one hectare is about 107,639 square feet.
FAQ
How many acres are in one hectare?
One hectare is about 2.4710538 acres. The value is the ratio of two exact definitions: 10,000 m² per hectare and 4,046.8564224 m² per acre.
Is the hectare to acre conversion exact?
The underlying definitions are exact, so the ratio is an exact number; displayed values are rounded to six decimal places.
Which is larger, an acre or a hectare?
A hectare is larger: one hectare equals roughly two and a half acres.