Convert acres to hectares
Enter a acres value below and convert to hectares
ac
1 acre ≈
0.405 hectares
* rounded result
Select how many decimal places the result will be rounded to:
How to convert acres to hectares
To convert acres to hectares, multiply a acres value by 0.40468564224.
Formula ha = ac × 0.40468564224
Example: Convert 10 acres to hectares Calculations: 10 ac × 0.40468564224 ≈ 4.0469 ha
Acre (ac)
The acre is the imperial system's unit of area, defined as the area of a rectangle with sides of 66 and 660 feet. It is equal to about 0.4047 hectares.
Hectare (ha)
The hectare is a unit of area in the metric system, defined as the area of a square with sides of 100 meters. It is equal to about 2.4711 acres.