How many hectares are in one acre?
One acre is 0.4047 ha.
Acres to Hectares
Type a value to convert it from acres to hectares. One ac equals 0.4047 ha.
Result
Acres and hectares, side by side
One acre is 0.4047 ha. In the other direction, one hectare is 2.471 ac.
The factor is exact rather than rounded: imperial and US units have been defined from the metric ones since 1959, so the conversion introduces no error of its own. What you see below is arithmetic, not an approximation.
The acre is 43,560 square feet, about 4,047 square meters or 0.4 hectares. It is the unit for land in the United States and the United Kingdom, and an American football field without its end zones is a little over an acre.
The hectare is 10,000 square meters, a square 100 meters on each side, a little larger than a soccer field, which is about 0.7 ha. Farms, forests and land parcels are measured in hectares across most of the world.
| Acre | Hectare |
|---|---|
| 1 | 0.404686 |
| 10 | 4.04686 |
| 50 | 20.2343 |
| 100 | 40.4686 |
| 500 | 202.343 |
| 1,000 | 404.686 |
Frequently asked questions
How do I convert hectares back to acres?
One hectare is 2.471 ac. The tool above converts in both directions.
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