Convert hectares to acres instantly. Enter a value below, or use the formula and reference table further down the page.
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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.