Acres to Hectares Converter
How to convert acres to hectares
hectares = acres ÷ 2.47105381
To convert acres to hectares, divide the number of acres by 2.47105381.
1 ac = 0.404685642 ha
Examples
- 1 ac ÷ 2.47105381 = 0.404685642 ha
- One square mile: 640 ac ÷ 2.47105381 = 258.998811 ha
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.
Acres to hectares conversion table
| Acres (ac) | Hectares (ha) |
|---|---|
| 0.25 ac | 0.101171411 ha |
| 0.5 ac | 0.202342821 ha |
| 0.75 ac | 0.303514232 ha |
| 1 ac | 0.404685642 ha |
| 2 ac | 0.809371284 ha |
| 3 ac | 1.21405693 ha |
| 4 ac | 1.61874257 ha |
| 5 ac | 2.02342821 ha |
| 10 ac | 4.04685642 ha |
| 20 ac | 8.09371284 ha |
| 40 ac | 16.1874257 ha |
| 50 ac | 20.2342821 ha |
| 100 ac | 40.4685642 ha |
| 160 ac | 64.7497028 ha |
| 500 ac | 202.342821 ha |
| 640 ac | 258.998811 ha |
| 1,000 ac | 404.685642 ha |
Unit definitions
- 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.
- 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.