Convert acres to hectares
Enter a value in acres (ac) to get hectares (ha). One acre is 0.404686 hectares; one hectare is 2.4711 acres.
How to use the Acre to hectare
- Type the number of acres.
- Click Convert.
- Read the result in hectares, plus the same value in every other area unit.
ac to ha formula
hectares = acres × 0.404686. To go the other way, acres = hectares × 2.4711 (see hectares to acres).
Worked example
12 ac × 0.404686 = 4.8562 ha.
Acres to hectares conversion table
| Acres | Hectares |
|---|---|
| 0.1 ac | 0.040469 ha |
| 0.5 ac | 0.202343 ha |
| 1 ac | 0.404686 ha |
| 2 ac | 0.809371 ha |
| 3 ac | 1.2141 ha |
| 5 ac | 2.0234 ha |
| 10 ac | 4.0469 ha |
| 20 ac | 8.0937 ha |
| 25 ac | 10.1171 ha |
| 50 ac | 20.2343 ha |
| 100 ac | 40.4686 ha |
| 250 ac | 101.1714 ha |
| 500 ac | 202.3428 ha |
| 1,000 ac | 404.6856 ha |
About the acre
43,560 square feet, about 0.405 hectares. Land in the USA, UK and South Asia.
About the hectare
10,000 m², roughly a 100 m × 100 m square. Farmland and forests worldwide.
Related conversions
hectares to acres · acres to square feet · acres to kanals · any unit.
Frequently asked questions
How many hectares in a acre?
0.404686 hectares.
How many acres in a hectare?
2.4711 acres.
Is the factor exact?
The factor 0.404686 is derived from the units' exact definitions; only the display is rounded.
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Last updated 2026-09-23.