Hectares to Acres Converter
How to convert hectares to acres
acres = hectares × 2.47105381
To convert hectares to acres, multiply the number of hectares by 2.47105381.
1 ha = 2.47105381 ac
Examples
- 1 ha × 2.47105381 = 2.47105381 ac
- One square kilometer: 100 ha × 2.47105381 = 247.105381 ac
Good to know
One hectare is about 2.471 acres. For a rough estimate, treat a hectare as 2.5 acres, which is within about 1.2%.
This is the international acre. The US survey acre, based on the survey foot that was retired at the end of 2022, is about 4,046.873 m², a difference of roughly 4 parts per million.
Hectares to acres conversion table
| Hectares (ha) | Acres (ac) |
|---|---|
| 0.25 ha | 0.617763454 ac |
| 0.5 ha | 1.23552691 ac |
| 1 ha | 2.47105381 ac |
| 2 ha | 4.94210763 ac |
| 3 ha | 7.41316144 ac |
| 4 ha | 9.88421526 ac |
| 5 ha | 12.3552691 ac |
| 10 ha | 24.7105381 ac |
| 20 ha | 49.4210763 ac |
| 25 ha | 61.7763454 ac |
| 50 ha | 123.552691 ac |
| 100 ha | 247.105381 ac |
| 200 ha | 494.210763 ac |
| 500 ha | 1,235.52691 ac |
| 1,000 ha | 2,471.05381 ac |
| 5,000 ha | 12,355.2691 ac |
| 10,000 ha | 24,710.5381 ac |
Unit definitions
- Hectare (ha)
- A hectare is 10,000 square meters, the area of a square 100 meters on each side. It is the standard metric unit for farmland and forestry.
- Acre (ac)
- An acre is 43,560 square feet, exactly 4,046.8564224 square meters. It is the usual unit for land area in the United States and is still common in the United Kingdom.