Convert Acres to Hectares (ac to ha)
Instantly convert acres to hectares with this free online converter. Type a value below and the result updates in real time. All calculations run in your browser, nothing is sent to a server.
Acres to Hectares Formula
ha = ac x 0.404686
Multiply the acres value by 0.404686 to get hectares.
Common Acres to Hectares Conversions
| Acres (ac) | Hectares (ha) |
|---|---|
| 0.1 ac | 0.040469 ha |
| 0.25 ac | 0.101172 ha |
| 0.5 ac | 0.202343 ha |
| 1 ac | 0.404686 ha |
| 2 ac | 0.809372 ha |
| 5 ac | 2.02343 ha |
| 10 ac | 4.04686 ha |
| 25 ac | 10.11715 ha |
| 50 ac | 20.2343 ha |
| 100 ac | 40.4686 ha |
How to Convert Acres to Hectares
- Enter the acres value in the input field above.
- The hectares result appears instantly as you type.
- Click the copy button to copy the result to your clipboard.
- To convert in the other direction, click the Swap button or visit the Hectares to Acres converter.
Frequently Asked Questions
How many hectares are in one acre?
One acre equals 0.404686 ha. Use the converter above for any value.
What is the formula to convert ac to ha?
The formula is: ha = ac x 0.404686. Multiply the acres value by 0.404686 to get hectares.
How do I convert hectares back to acres?
Use our reverse converter: Hectares to Acres. You can also click the "Swap" button above the converter.
Is this converter accurate?
Yes. This converter uses the standard conversion factor and handles up to 8 decimal places of precision. All calculations run instantly in your browser with no rounding shortcuts.
Do I need to sign up to use this converter?
No. This converter is completely free with no signup, no account, and no usage limits. Your data never leaves your browser.
About This Tool
- Tool
- FreeToolPark Acres to Hectares Converter
- Type
- Free online tool, no signup required
- Domain Expertise
- Unit conversion, measurement systems, data format conversion
- Privacy
- 100% client-side, no data stored
- Description
- Free acres to hectares converter. Instantly convert ac to ha with a reference table of common values. No signup, runs in your browser.
Cite This Tool
FreeToolPark. "Acres to Hectares Converter." FreeToolPark, 2026, www.freetoolpark.com/tools/convert/acre-to-ha. Accessed April 14, 2026.