Acres (ac)
Area · Imperial
Main conversion
1 ac = 4046.9 m² (0.40469 ha)
Description and history
The acre (symbol ac) is the agricultural land unit of the Imperial and US customary systems.
It equals 4046.9 square meters, about 0.40469 hectares, or 4,840 square yards. Historically it represented the area a yoke of oxen could till in one day. The United States, United Kingdom, Canada and Australia still use it in land records and property sales.
Reference conversions
| Unit | Equals |
|---|---|
| Square Meters (m²) | 1 ac = 4046.9 m² |
| Hectares (ha) | 1 ac = 0.40469 ha |
| Are (a) | 1 ac = 40.469 a |
| Square Kilometers (km²) | 1 ac = 0.0040469 km² |
