Hectares to acres – convert ha to ac
Convert hectares to acres (ha to ac) when you need to express metric land areas in older imperial units. This page opens the main area converter with hectares → acres pre-selected.
Open the interactive ha → ac converter:
Use main converter (ha → ac) or switch to ac → haOn the homepage you can also convert hectares to square metres, square kilometres and back again.
Quick reference: hectares to acres
The converter uses the exact factor 1 ha = 2.47105381 acres. Rounded examples:
| Hectares (ha) | Acres (ac, approx.) |
|---|---|
| 0.25 ha | 0.62 ac |
| 0.5 ha | 1.24 ac |
| 1 ha | 2.47 ac |
| 2 ha | 4.94 ac |
| 5 ha | 12.36 ac |
| 10 ha | 24.71 ac |
| 20 ha | 49.42 ac |
Why convert hectares to acres?
People often need ha to ac conversions when they:
- Read land registry or planning documents in hectares but talk in acres.
- Compare farm sizes between countries that use different systems.
- Check estate agents’ details that list both hectares and acres.
- Study geography or environmental reports using SI units.
More area converters on this site
The homepage area converter uses square metres as its internal base, so moving between ha, ac, ft², m² and km² is always consistent.