Acres to Hectares Converter
Common for farmland, forestry and land sales when comparing US or UK figures with metric ones.
1 ac = 0.4047 ha
hectares
1 ac = 0.4047 ha
How to convert acres to hectares
Multiply the number of acres by 0.40468564.
Formula
ha = ac × 0.40468564
The factor is rounded; the converter uses the full-precision value.
Examples
- 1 ac × 0.40468564 = 0.4047 ha
- 40 ac × 0.40468564 = 16.1874 ha
- 640 ac × 0.40468564 = 258.9988 ha
Acres to hectares conversion table
| Acres (ac) | Hectares (ha) |
|---|---|
| 0.25 | 0.1012 |
| 0.5 | 0.2023 |
| 1 | 0.4047 |
| 2 | 0.8094 |
| 2.5 | 1.0117 |
| 5 | 2.0234 |
| 10 | 4.0469 |
| 20 | 8.0937 |
| 40 | 16.1874 |
| 50 | 20.2343 |
| 100 | 40.4686 |
| 160 | 64.7497 |
| 250 | 101.1714 |
| 640 | 258.9988 |
| 1,000 | 404.6856 |
Values rounded to 4 decimal places or 4 significant digits.
About acres
An acre is 43,560 square feet, about 4,047 m². It is the traditional unit for land in the US and the UK. An American football field including both end zones covers about 1.32 acres.
About hectares
A hectare is 10,000 square meters, a square 100 m on each side, or about 2.471 acres. Farmland, forests and large building sites are measured in hectares in most countries.
Frequently asked questions
How many hectares are in one acre?
One acre equals 0.4047 hectares (rounded).
How do I convert acres to hectares?
Multiply the number of acres by 0.40468564. For example: 40 ac × 0.40468564 = 16.1874 ha.
How many acres are in one hectare?
One hectare equals 2.4711 acres.
Is the ac to ha conversion exact?
The factor between these units has more decimals than are useful to show, so it is rounded on this page. The converter itself always calculates with the full-precision value.