Convert acres to hectares in one step. Type a value, change the units if you need a different pair, and the answer updates as you type, with the reverse rate and a quick reference list.
Results are estimates for planning. Check the figures before you make a financial or health decision.
How to convert acres to hectares
Multiply the number of acres by 0.404686 to get ha:
ha = acres × 0.404686
To go the other way, divide by 0.404686 (or multiply by 2.471054). The converter stores each unit as a multiple of a base unit, so you can also pick any other pair of units from the same group.
Worked example
Using the default values in the converter above:
| Input | Value |
|---|---|
| Value | 5 |
| From | Acres |
| To | Hectares |
5 acres equals 2.023428 hectares
Acres to Hectares reference table
| Acres | Hectares |
|---|---|
| 1 acres | 0.404686 ha |
| 5 acres | 2.023428 ha |
| 10 acres | 4.046856 ha |
| 50 acres | 20.234282 ha |
| 100 acres | 40.468564 ha |
| 500 acres | 202.342821 ha |
| 1,000 acres | 404.685642 ha |
| 5,000 acres | 2,023.428211 ha |
| 10,000 acres | 4,046.856422 ha |
Tips and common mistakes
Area units are squares of length units, so the factor is squared too. One metre is about 3.28 ft, but one square metre is about 10.76 square feet, not 3.28. Using the linear factor for an area is the most frequent error.
An acre is 4,046.86 m² and a hectare is exactly 10,000 m², so a hectare is about 2.47 acres. Floor areas in the UK are often quoted in square feet by agents and square metres on plans, so it is worth knowing both.
If you are working out how much flooring, paint or turf to buy, the Area and square footage calculator also handles room shapes and openings.
Frequently asked questions
How many hectares are in 1 acres?
1 acres equals 0.404686 hectares.
How do I convert acres to ha by hand?
Multiply the acres figure by 0.404686. For example, 5 acres × 0.404686 = 2.023428 ha.
How do I convert ha back to acres?
Divide the ha figure by 0.404686, or multiply it by 2.471054. For example, 2.023428 ha is 5 acres.
Is this conversion exact?
Yes. Area factors are exact squares of the linear definitions, apart from rounding of the displayed result.