Convert hectares to acres instantly. Enter a value below, or use the formula and reference table further down the page.
In practice
Hectares to acres multiplies by 2.47105, so a 5-hectare property is 12.4 acres and a 100-hectare farm is 247 acres. The hectare is used for land worldwide except in the US and a few other places, so international listings and farm statistics are usually in hectares. One hectare is a square 100 m by 100 m, or about 2.5 football fields. When comparing land prices, convert both the price and the area, since 'per hectare' and 'per acre' figures are not directly comparable.
How to convert hectares to acres
Multiply the value by 2.471053815.
ac = ha × 2.471053815Example: 10 ha = 24.7105 ac.
Hectares to Acres conversion table
| Hectares (ha) | Acres (ac) |
|---|---|
| 1 ha | 2.4711 ac |
| 2 ha | 4.9421 ac |
| 3 ha | 7.4132 ac |
| 4 ha | 9.8842 ac |
| 5 ha | 12.3553 ac |
| 10 ha | 24.7105 ac |
| 15 ha | 37.0658 ac |
| 20 ha | 49.4211 ac |
| 25 ha | 61.7763 ac |
| 50 ha | 123.5527 ac |
| 100 ha | 247.1054 ac |
Frequently asked questions
How many acres is 1 hectare?
1 hectare equals 2.4711 acres.
What is the formula to convert ha to ac?
To convert ha to ac, multiply the value by 2.471053815. The full formula is: ac = ha × 2.471053815.
How do I convert acres back to hectares?
Use the same calculator above and type your value into the acres field instead — it converts in both directions. Or use the reverse formula: ha = ac ÷ 2.471053815.
Is the ha to ac conversion exact?
The conversion factor used here (2.471053815) is the standard internationally defined value. Results on this page are rounded to four decimal places for readability.