Convert Acres to Hectares
ac to ha · area conversion
What are acres and hectares?
An acre is 43,560 square feet (about 4,047 m²), the traditional unit for land area. A hectare is 10,000 square meters (about 2.47 acres), the metric unit for land area. For scale: a tennis court is about 261 m² (2,808 ft²), and a soccer pitch is roughly 0.7 hectares.
How to convert acres to hectares
1 ac = 0.404686 ha. To convert, multiply the number of acres by 0.404686. For example, 5 ac = 2.02343 ha, and 20 ac = 8.09371 ha. To go the other way, multiply hectares by 2.47105 (since 1 ha = 2.47105 ac).
Acres to Hectares conversion table
| Acres (ac) | Hectares (ha) |
|---|---|
| 1 | 0.404686 |
| 5 | 2.02343 |
| 10 | 4.04686 |
| 25 | 10.1171 |
| 50 | 20.2343 |
| 100 | 40.4686 |
| 1,000 | 404.686 |
FAQ
What is 1 ac in ha?
1 ac = 0.404686 ha. To convert any amount, multiply the number of acres by 0.404686.
How do I convert hectares back to acres?
Go the other way: 1 ha = 2.47105 ac, so multiply hectares by 2.47105 to get acres.
Is a acre bigger than a hectare?
No — 1 ac is the smaller unit, equal to 0.404686 ha (it takes 2.47105 ac to make one ha).
Are these area conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.