How many acres are in a hectare?

1 ha = 2.4711 ac. To convert any amount, multiply by 2.4711.

How do you convert hectares to acres?

Multiply the number of hectares by 2.4711 to get acres. The formula is shown in the "How it's calculated" section above.

Where does the conversion factor come from?

It's a published international standard. Most are defined exactly by international agreement (e.g. 1 inch = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Source citations are listed under the formula above.

Unit converter — Area

Hectares to acres converter

Convert hectares (ha) to acres (ac). Source-cited conversion factor, exact to the displayed precision.

Results are mathematically exact for the displayed precision. How we calculate.

How it's calculated

Convert hectares to acres— the formula

Hectares convert to acres by multiplying by the published conversion factor. The factor below is exact to the precision shown, sourced from the citation under the formula.

ac = ha × 2.4711

ha = ac × 0.404686

Derived from the length conversion factors. 1 acre = 4046.8564224 m² (international acre, 43560 ft²).

Questions

Frequently asked questions

How many acres are in a hectare?
1 ha = 2.4711 ac. To convert any amount, multiply by 2.4711.
How do you convert hectares to acres?
Multiply the number of hectares by 2.4711 to get acres. The formula is shown in the "How it's calculated" section above.
Where does the conversion factor come from?
It's a published international standard. Most are defined exactly by international agreement (e.g. 1 inch = 25.4 mm exactly, 1 lb = 0.45359237 kg exactly). Source citations are listed under the formula above.