Ac to ha conversion formula
1 acre = 0.404686 hectare
The acre equals 4,046.86 m² — about 75% of a football field. The standard land unit in the US and UK.
The hectare (ha) equals 10,000 m² — the standard agricultural land unit in metric countries.
Ac to ha conversion table
| ac | ha |
|---|---|
| 1 ac | 0.404686 ha |
| 2 ac | 0.809372 ha |
| 3 ac | 1.2141 ha |
| 5 ac | 2.0234 ha |
| 10 ac | 4.0469 ha |
| 20 ac | 8.0937 ha |
| 25 ac | 10.1172 ha |
| 50 ac | 20.2343 ha |
| 100 ac | 40.4686 ha |
| 250 ac | 101.1715 ha |
| 500 ac | 202.343 ha |
| 1000 ac | 404.686 ha |
How to convert ac to ha
- Write down the value in ac you want to convert.
- Multiply it by 0.404686 — or use the converter above, which does it instantly.
- Read your result in ha. Done.
Frequently asked questions
How many ha is 1 ac?
Using the official conversion factor, 1 acre = 0.404686 hectare. The converter above handles any value instantly.
What is the formula to convert acre to hectare?
1 acre = 0.404686 hectare. Multiply any value in ac by this factor to get ha.
Is this ac to ha converter free?
Yes — 100% free, unlimited, with no sign-up. CalculUnits is funded by non-intrusive ads, never by paywalls.