Convert Acre to Hectare
Convert Acre to Hectare instantly. 1 ac = 0.404686 ha. Formula, worked examples and a quick reference table.
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One acre equals 0.404686 hectare. To convert any number of acres to hectares, multiply by 0.40468564.
The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.
Acre to Hectare formula
To go the other way, use acre = hectare ÷ 0.40468564.
About these units
An acre is 43,560 square feet, historically about the area one person could plough in a day with a yoke of oxen. It is still standard in US and UK land dealings.
A hectare is 10,000 square metres — a square 100 metres on each side. It is the standard unit for agricultural land in most of the world.
Acre to Hectare conversion table
| Acre | Hectare |
|---|---|
| 1 ac | 0.4047 ha |
| 2 ac | 0.8094 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 |
Frequently asked questions
How many hectares are in a acre? +
There are 0.404686 hectares in one acre.
What is 10 ac in ha? +
10 ac equals 4.0469 ha. Multiply 10 by 0.40468564.
How do I convert hectare back to acre? +
Use acre = hectare ÷ 0.40468564. The converter above handles both directions, or see our dedicated Hectare to Acre page.