1 acre = 43,560 ft² = 4,046.8564224 m² (exact) 1 ha = 10,000 m²
Result in Hectares (ha)
0.4046856422
Reverse factor
1 ha = 2.471053815 ac
Common area conversions
1 ft²
0.09290304 m²
1 m²
10.76391042 ft²
1 in²
6.4516 cm²
1 yd²
9 ft²
1 ac
0.4046856422 ha
1 ha
2.471053815 ac
1 ac
43,560 ft²
1 mi²
640 ac
1 km²
100 ha
Acres to hectares conversion table
Acres to hectares
Acres (ac)
Hectares (ha)
0.25 ac
0.1011714106 ha
0.5 ac
0.2023428211 ha
1 ac
0.4046856422 ha
2 ac
0.8093712845 ha
5 ac
2.023428211 ha
10 ac
4.046856422 ha
40 ac
16.18742569 ha
100 ac
40.46856422 ha
640 ac
258.998811 ha
The formula
ha = ac × 0.4046856422
1 acre = 43,560 ft² = 4,046.8564224 m² (exact). 1 ha = 10,000 m². These are exact definitions, so the only rounding is in the displayed result (10 significant digits).
When you need it
Acres to hectares is the land conversion for farms, ranches and international property comparisons. An international acre is exactly 0.40468564224 ha. A square mile (640 acres) is about 259 hectares.