How to convert acres to hectares
- Type the value you want to convert.
- The result appears instantly. Use Swap units to reverse the direction.
- Choose other units from the lists if you need a different conversion.
Formula
ha = acre × 0.4047 and acre = ha × 2.4711.
Examples
5 acre = 2.0234 ha. 25 acre = 10.1171 ha. 100 acre = 40.4686 ha.
Quick reference table
| acre | ha |
|---|---|
| 0.5 acre | 0.2023 ha |
| 1 acre | 0.4047 ha |
| 2.5 acre | 1.0117 ha |
| 5 acre | 2.0234 ha |
| 10 acre | 4.0469 ha |
| 25 acre | 10.1171 ha |
| 50 acre | 20.2343 ha |
| 100 acre | 40.4686 ha |
| 250 acre | 101.1714 ha |
| 640 acre | 258.9988 ha |
And the other way: ha to acre
| ha | acre |
|---|---|
| 1 ha | 2.4711 acre |
| 5 ha | 12.3553 acre |
| 10 ha | 24.7105 acre |
| 25 ha | 61.7763 acre |
| 50 ha | 123.5527 acre |
| 100 ha | 247.1054 acre |
When you need this conversion
Farmland, forests and large plots are measured in acres in the USA and UK and in hectares in most other countries. One hectare is 10,000 square meters.
Frequently asked questions
How many ha is 1 acre?
1 acre equals 0.4047 ha. In the other direction, 1 ha equals 2.4711 acre.
How many acres are in a hectare?
One hectare is about 2.4711 acres, so 1 acre is about 0.4047 hectares.
What is the formula to convert acres to hectares?
Multiply the number of acre by 0.4047 to get ha. To go back, multiply ha by 2.4711.
Is this converter free and private?
Yes. It is free, needs no sign-up and runs in your browser, so the numbers you enter are not sent anywhere.
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Last updated: November 6, 2026