1 ac equals 0.404686 ha. To convert Acre to Hectare, multiply the value by 0.404686; divide by 0.404686 to convert back. Enter any number above and the result appears instantly — free and entirely in your browser.
How do you convert Acre to Hectare?
The conversion formula is ha = ac × 0.404686. The conversion factor is fixed by definition, so the result is always exact.
Acre to Hectare conversion table
| ac | ha |
|---|---|
| 1 ac | 0.404686 ha |
| 5 ac | 2.02343 ha |
| 10 ac | 4.04686 ha |
| 50 ac | 20.2343 ha |
| 100 ac | 40.4686 ha |
| 1,000 ac | 404.686 ha |
What is Acre (ac)?
The acre is the imperial unit for land, defined as exactly 4,046.8564224 m² — about 0.405 hectares. US and UK real estate and farmland are commonly quoted in acres.
What is Hectare (ha)?
The hectare (ha) is exactly 10,000 m² — a square of 100 × 100 metres. It is the standard unit for farmland, forests and large plots, and equals about 2.47 acres.
Why convert Acre to Hectare?
Metric countries measure land in square metres and hectares, while the US and UK use square feet and acres. Flats, plots and farmland constantly mix these units, so converting area is routine in real estate, gardening and agriculture.
One hectare is defined as exactly 10,000 m² (BIPM SI brochure), and one international acre is exactly 4,046.8564224 m² — so 1 ha equals about 2.4711 acres. A standard football pitch covers roughly 0.7 ha.
How to convert Acre to Hectare
- Enter the value in Acre into the left field of the converter.
- Read the result in Hectare instantly in the right field — it updates automatically.
- Use the swap button to reverse the direction (Hectare to Acre).
The converter runs entirely in your browser: no uploads, no queue, no limits. You can even use it offline.