Acre to Hectare Converter
Convert acres to hectares (acre to ha) instantly with this free online area converter. Enter any value in the Acre field and get the equivalent in Hectare immediately. This converter handles any quantity — from tiny fractions to large numbers — with full precision. No signup, no ads in the widget, and the conversion runs entirely in your browser for instant results.
The conversion factor is exact: 1 acre = 0.404686 ha. To convert acres to hectares, multiply your Acre value by 0.404686. For example, 10 acre = 4.04686 ha. You can also reverse the calculation: 1 ha = 2.47105163 acre.
Quick conversion table
| Acre (acre) | Hectare (ha) |
|---|---|
| 1 acre | 0.404686 ha |
| 5 acre | 2.02343 ha |
| 10 acre | 4.04686 ha |
| 25 acre | 10.11715 ha |
| 50 acre | 20.2343 ha |
| 100 acre | 40.4686 ha |
Use the swap button to reverse the direction, or choose a different unit from the dropdown menus to convert within the area category.
Formula
Acre to Hectare conversion: 1 acre = 0.404686 ha hectares = acres × 0.404686 1 ha = 2.47105163 acre acres = hectares × 2.47105163
Example
Example: Convert 10 acre to ha: 10 acre × 0.404686 = 4.04686 ha So, 10 acre is about 4.04686 ha. To convert back, multiply by 2.47105163: 4.04686 ha × 2.47105163 = 10 acre.
How to Use
- Enter the value you want to convert in the Acre field
- The result in Hectare appears instantly below
- Use the dropdown menus to change units if needed
- Click 'Swap Units' to reverse the conversion direction
- Copy the result or adjust the input for a new conversion
Frequently Asked Questions
How do I convert acres to hectares?
Enter the value in Acre (acre) in the 'From' field. The equivalent in Hectare (ha) appears instantly in the 'To' field. The converter uses precise conversion factors and updates in real time as you type.
What is the formula to convert acre to ha?
1 acre = 0.404686 ha, so hectares = acres × 0.404686. To convert back, 1 ha = 2.47105163 acre. The full formula and a worked example are shown on this page.
How many hectares are in one Acre?
1 acre = 0.404686 ha.
Is this Acre to Hectare converter free?
Yes, completely free with no signup, no limits, and no ads in the converter widget. You can convert as many values as you need. The tool runs entirely in your browser, so your data never leaves your device.
Can I convert hectares back to acres?
Yes. Click the 'Swap Units' button to reverse the direction. You can also use the dropdown menus to select any other area unit for either field.
How accurate is the acre to ha conversion?
The converter uses high-precision conversion factors (up to 8 decimal places). Results are displayed with up to 6 decimal places, with trailing zeros removed for readability. For scientific or engineering work, always verify with official standards.