Convert hectares to acres
Converting hectares to acres is a common area task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 ha equals 2.47105 ac, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert hectares to acres
To convert hectares to acres, multiply the number of hectares by 2.47105. For example, 10 ha × 2.47105 = 24.7105 ac.
ac = ha × 2.47105
- Write down the value in hectares you want to convert.
- Multiply it by 2.47105 (the exact ha→ac factor).
- The result is your value in acres. Check it below with the converter or the table.
Conversion table
Common values of hectares and their equivalents in acres:
| ha | ac |
|---|---|
| 1 | 2.47105 |
| 2 | 4.94211 |
| 3 | 7.41316 |
| 4 | 9.88422 |
| 5 | 12.3553 |
| 10 | 24.7105 |
| 20 | 49.4211 |
| 25 | 61.7763 |
| 50 | 123.553 |
| 100 | 247.105 |
| 250 | 617.763 |
| 500 | 1,235.53 |
About these units
Hectare (ha). A hectare equals 10,000 square meters, or 100 m × 100 m. It is the standard land unit for farms, forests and parks in metric countries.
Acre (ac). An acre equals exactly 4,046.8564224 square meters, or 43,560 square feet. It is the traditional land unit in the US and UK, about 0.4 hectares.
Frequently asked questions
How do I convert hectares to acres?
To convert hectares to acres, multiply the number of hectares by 2.47105. For example, 10 ha × 2.47105 = 24.7105 ac. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many acres are in 1 hectare?
1 ha = 2.47105 ac. That is the fixed relationship used by this converter and by international standards.
How many hectares are in 1 acre?
1 ac = 0.404686 ha. If you are converting in the opposite direction, use our Acre to Hectare converter for the dedicated table and FAQ.
Is the hectares to acres conversion exact?
Yes. Both units are defined by international agreement, so the factor of 2.47105 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is hectare used for?
A hectare equals 10,000 square meters, or 100 m × 100 m. It is the standard land unit for farms, forests and parks in metric countries.