📏 Hectares to Acres Converter
Convert hectares (ha) to acres (ac) instantly, with the formula, a worked example and a conversion table.
Quick answer: 1 hectare (ha) = 2.4710538 acres (ac). Formula: ac = ha × 2.4710538.
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Hectares to Acres Converter inputs
Result
Hectares to Acres conversion table
| Hectares (ha) | Acres (ac) |
|---|---|
| 0.1 ha | 0.24710538 ac |
| 0.5 ha | 1.2355269 ac |
| 1 ha | 2.4710538 ac |
| 2 ha | 4.9421076 ac |
| 3 ha | 7.4131614 ac |
| 5 ha | 12.355269 ac |
| 10 ha | 24.710538 ac |
| 20 ha | 49.421076 ac |
| 25 ha | 61.776345 ac |
| 50 ha | 123.55269 ac |
| 100 ha | 247.10538 ac |
| 1,000 ha | 2,471.0538 ac |
Other area conversions
How to convert hectares to acres
Multiply the number of hectares by 2.4710538 to get acres: ac = ha × 2.4710538.
Example: 5 ha = 12.355269 ac.
The hectare (ha) and the acre (ac) are both units of area. Need the opposite direction? Use the ac to ha converter.
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Metric and imperial units
The metric system (SI) is used by almost every country and by science worldwide. Its units scale by powers of ten – 1 kilometer is 1,000 meters, 1 meter is 100 centimeters – which makes conversions inside the system easy. The imperial and US customary systems (inches, feet, pounds, gallons) are still used daily in the United States and partly in the UK.
Since 1959 the inch has been defined as exactly 2.54 centimeters and the pound as exactly 0.45359237 kilograms, so conversions between the two systems are exact. Note that a US gallon (3.785 L) and an imperial gallon (4.546 L) are different – choose the right one above.
This converter covers 10 categories and 66 units: length, weight, temperature, volume, area, speed, time, data, energy, pressure.
Frequently asked questions
How many acres are in a hectare?
1 hectare = 2.4710538 acres.
How do I convert hectares to acres?
Use the formula ac = ha × 2.4710538. For example, 5 ha = 12.355269 ac.
How do I convert acres back to hectares?
1 acre = 0.40468564 hectares. Use the ac to ha converter linked on this page.
Are these conversions exact?
Yes – all factors use the internationally defined values (for example 1 inch = 2.54 cm exactly, 1 pound = 0.45359237 kg exactly). Results are rounded to 8 significant digits for display.