How to convert acres to hectares
One acre equals 0.404686 hectares. To convert, multiply the number of acres by 0.404686 (or divide by 2.471054):
Mental-math shortcut: Multiply acres by 0.4 for a quick estimate: 10 ac ≈ 4 ha (exact: 4.05 ha).
Example
Convert 10 acres to hectares: 10 ac × 0.404686 = 4.0469 ha.
Acres to Hectares conversion chart
| Acres (ac) | Hectares (ha) |
|---|---|
| 0.25 | 0.101171 |
| 0.5 | 0.202343 |
| 1 | 0.404686 |
| 2 | 0.809371 |
| 2.5 | 1.0117 |
| 5 | 2.0234 |
| 10 | 4.0469 |
| 20 | 8.0937 |
| 25 | 10.1171 |
| 40 | 16.1874 |
| 50 | 20.2343 |
| 100 | 40.4686 |
| 160 | 64.7497 |
| 640 | 259 |
| 1,000 | 404.69 |
What is an acre?
An acre is 43,560 square feet, or about 4,047 square meters. It is the traditional unit for land in the US and UK. An American football field including both end zones covers about 1.32 acres.
What is a hectare?
A hectare (ha) is 10,000 square meters — a square 100 meters on each side. It is the standard unit for farmland and land area in most countries. One hectare is about 2.471 acres.
Converting the other way? Use the Hectares to Acres converter.
Frequently asked questions
How many hectares is one acre?
One acre is 0.404686 hectares.
How do I convert acres to hectares?
Multiply the value in acres by 0.404686. For example, 10 ac × 0.404686 = 4.0469 ha.
What is 1 ac in hectares?
1 ac is 0.404686 hectares.
How do I convert hectares to acres?
Multiply hectares by 2.471054 (or divide by 0.404686). You can also use our Hectares to Acres converter.
Conversions use the internationally agreed definitions of each unit (for example, 1 inch = 2.54 cm exactly) and are rounded for display. Volume converters use US customary units unless stated otherwise.
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