Acres to Hectares Converter
Type a value in acres to see it in hectares. It works both ways: type in the hectares box to convert back.
Formula
To convert acres to hectares, divide by 2.471053815 (the same as multiplying by 0.4046856422).
1 ac = 0.40468564224 ha and 1 ha = 2.47105381467 ac.
Acres to hectares table
| Acres | Hectares |
|---|---|
| 0.25 ac | 0.1011714 ha |
| 0.5 ac | 0.2023428 ha |
| 1 ac | 0.4046856 ha |
| 2 ac | 0.8093713 ha |
| 5 ac | 2.023428 ha |
| 10 ac | 4.046856 ha |
| 20 ac | 8.093713 ha |
| 50 ac | 20.23428 ha |
| 100 ac | 40.46856 ha |
Worked examples
0.5 ac in hectares
0.5 ac
0.2023428 ha
0.5 × 0.4046856422 = 0.2023428211
5 ac in hectares
5 ac
2.023428 ha
5 × 0.4046856422 = 2.023428211
50 ac in hectares
50 ac
20.23428 ha
50 × 0.4046856422 = 20.23428211
About Acres to Hectares Converter
This converter turns acres into hectares as you type, and works the other way too: type in the hectares box to convert back. To convert acres to hectares, divide by 2.471053815 (the same as multiplying by 0.4046856422). For example, 0.5 ac is 0.2023428 ha, and 5 ac is 2.023428 ha.
Area is length squared, so the factor between two area units is the square of the factor between the matching length units. That is why a square metre is not 3.28 but about 10.76 square feet. Both units have exact definitions, so the converter gives an exact result, rounded only for display. Use the table below for common values, or set the decimal places to round the answer for a form or a label.
How to use Acres to Hectares Converter
- Type the amount in acres in the first box.
- Read the answer in hectares in the second box and in the result line below.
- To convert the other way, type in the hectares box instead, or use the swap button to open the hectares to acres page.
- Choose a number of decimal places if you need a rounded figure, then copy the result line.
Common uses
- Ordering flooring, turf or paving
- Understanding farmland and plot sizes
- Checking room sizes on a floor plan
- Comparing floor areas in property listings
Frequently asked questions
How many hectares are in one acre?
There are 0.4046856422 hectares in one acre. This figure is exact, because both units have fixed definitions.
How do I convert acres to hectares?
To convert acres to hectares, divide by 2.471053815 (the same as multiplying by 0.4046856422). For example, 50 ac is 20.23428 ha.
How do I convert hectares to acres?
Going the other way, multiply by 2.471053815. The hectares to acres converter does this for you.
What is 10 ac in hectares?
10 ac is 4.046856 ha.
Why is the area factor so much bigger than the length factor?
Area multiplies two lengths together, so the length factor is applied twice. One metre is about 3.2808 feet, so one square metre is about 3.2808 × 3.2808 = 10.764 square feet.