How to convert acres to hectares
One acre is exactly 4,046.8564224 square metres, and one hectare is exactly 10,000 square metres.
Conversion formula
hectares = acres × 0.40468564224
Reverse: acres = hectares ÷ 0.40468564224
For example, 1 ac = 0.4047 ha.
Acres to Hectares conversion chart
Use these common reference values or the interactive calculator above for any number.
| Acres (ac) | Hectares (ha) |
|---|---|
| 1 ac | 0.4047 ha |
| 2 ac | 0.8094 ha |
| 5 ac | 2.0234 ha |
| 10 ac | 4.0469 ha |
| 25 ac | 10.1171 ha |
| 50 ac | 20.2343 ha |
| 100 ac | 40.4686 ha |
| 250 ac | 101.1714 ha |
When is this conversion useful?
Acres are common in British and US land descriptions; hectares are used widely in metric property and agriculture records.
Make sure the measurement is an area. A hectare is not a unit of length, so it cannot be compared directly with metres or miles.
Frequently asked questions
How many hectares is 1 acre?
1 acre is approximately 0.404686 hectares.
How many acres is 1 hectare?
1 hectare is approximately 2.47105 acres.