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Convert acres to hectares
Instant, accurate ac → ha conversion with a live converter, table and formula.
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1 acre = 0.404686 hectares
1 hectare = 2.47105 acres
acres to hectares table
| acres (ac) | hectares (ha) |
|---|---|
| 0.5 | 0.202343 |
| 1 | 0.404686 |
| 2 | 0.809371 |
| 5 | 2.02343 |
| 10 | 4.04686 |
| 20 | 8.09371 |
| 50 | 20.2343 |
| 100 | 40.4686 |
| 500 | 202.343 |
| 1000 | 404.686 |
Formula
hectares = acres × 0.404686.
Example
10 acres = 4.04686 hectares.
What is a acre?
An acre is 43,560 square feet (4,047 m²), used for land area.
What is a hectare?
A hectare (ha) is 10,000 square meters (about 2.47 acres).
Real-world reference points
A parking space is ~12 m²; a tennis court ~261 m²; a football pitch ~7,100 m² (about 1.8 acres).
| Reference | acres | hectares |
|---|---|---|
| Parking space | 0.00309 ac | 0.00125 ha |
| One-bedroom flat | 0.0124 ac | 0.005 ha |
| Tennis court | 0.0645 ac | 0.0261 ha |
| Football (soccer) pitch | 1.76 ac | 0.714 ha |
| City block (typical) | 4.94 ac | 2 ha |
Mistakes to avoid with area conversions
- Confusing '10 square feet' with 'a 10-foot square' — the square is 100 ft², ten times bigger.
- Swapping acres and hectares: a hectare is ~2.47 acres, enough to wreck a land deal.
- Quoting apartment size in built-up vs carpet area without saying which — they differ 15-30%.
Frequently asked questions
How many hectares in a acres?+
1 acre = 0.404686 hectares.
How do I convert acres to hectares?+
Enter the value in the acres box above and the hectares value appears instantly. You can also type in the hectares box to convert the other way.
Is this ac to ha converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.