Acre to Hectare
1 ac = 0.4046856422 ha
How to convert acre to hectare
Enter the value in acre (ac) above and the equivalent in hectare (ha) updates as you type. This conversion comes up when comparing apartment sizes listed in square meters vs square feet.
- One hectare is 10,000 m², about 2.47 acres → that is 2.471054 ac in acre.
- An acre is roughly a football field without the end zones → that is 0.404686 ha in hectare.
Typical situations: buying land or farmland advertised in acres or hectares; sizing solar panels, carpets, or paint coverage across unit systems.
You can also convert in the other direction: Hectare to Acre
Acre to Hectare conversion table
| Acre (ac) | Hectare (ha) |
|---|---|
| 1 | 0.404686 |
| 2 | 0.809371 |
| 5 | 2.023428 |
| 10 | 4.046856 |
| 25 | 10.117141 |
| 50 | 20.234282 |
| 100 | 40.468564 |
Watch out for
- An acre is a fixed unit (4,047 m²), not "whatever a local field is"
- Squares of flooring: US "square" in roofing means 100 sq ft
Frequently asked questions
How many hectares is 1 acre?
1 acre = 0.404686 hectares.
What is the formula to convert acre to hectares?
The formula is: ha = ac × 0.404686.
What is 10 acres in hectares?
10 acres = 4.046856 hectares.