To convert US survey acres to hectares, multiply the value by 0.404687. To go the other way, multiply hectares by 2.47104 to get US survey acres.
| US Survey Acres (ac (US)) | Hectares (ha) |
|---|---|
| 1 ac (US) | 0.404687 ha |
| 2 ac (US) | 0.809375 ha |
| 5 ac (US) | 2.02344 ha |
| 10 ac (US) | 4.04687 ha |
| 20 ac (US) | 8.09375 ha |
| 50 ac (US) | 20.2344 ha |
| 100 ac (US) | 40.4687 ha |
| 500 ac (US) | 202.344 ha |
| 1,000 ac (US) | 404.687 ha |
US survey acre (ac (US)). The US survey acre is 43,560 square US survey feet (4,046.8726 m²), used in US land records.
Hectare (ha). A hectare is 10,000 square meters (100 m × 100 m), the world's standard unit for farmland and large plots.
There are 0.404687 hectares in one US survey acre.
Multiply the number of US survey acres by 0.404687. For example, 10 US survey acres equal 4.04687 hectares.
One hectare equals 2.47104 US survey acres.