Unit-To-Unit Area conversion

Hectares to Acres

1 hectare = 2.471053815 acres

A hectare is 2.47105 acres. Forestry and farm areas are reported in hectares in most of the world and acres in the US and UK.

Formula ac = ha × 2.471053814672

=

Type in either field — the other updates on every keystroke. Need other units? Open the full area converter.

Hectares to Acres — quick reference
HectareAcre
1 ha2.471054 ac
2 ha4.942108 ac
3 ha7.413161 ac
4 ha9.884215 ac
5 ha12.355269 ac
10 ha24.710538 ac
15 ha37.065807 ac
20 ha49.421076 ac
25 ha61.776345 ac
50 ha123.552691 ac
100 ha247.105381 ac
500 ha1235.526907 ac
1000 ha2471.053815 ac
Acres to Hectares — reverse
AcreHectare
1 ac0.404686 ha
2 ac0.809371 ha
3 ac1.214057 ha
4 ac1.618743 ha
5 ac2.023428 ha
10 ac4.046856 ha
15 ac6.070285 ha
20 ac8.093713 ha
25 ac10.117141 ha
50 ac20.234282 ha
100 ac40.468564 ha
500 ac202.342821 ha
1000 ac404.685642 ha

Worked examples

Common values
SituationFromTo
Small plot0.1 ha0.2471 acres
Half hectare0.5 ha1.236 acres
One hectare1 ha2.471 acres
Small field5 ha12.36 acres
Farm field10 ha24.71 acres
Estate100 ha247.1 acres

Mental-math shortcut

Multiply by 2.5, which reads about 1.2% high. 4 ha is about 10 acres, against an exact 9.88.

Where this conversion comes up

Farm and forest listings use hectares in most countries and acres in the US. A 5 ha field is 12.36 acres.

Common mistakes

Do not simply double the figure: a hectare is 2.47 acres. A hectare is 10,000 m², roughly a 100 m by 100 m square.

Background

The hectare is the metric "hecto-are". An are is 100 m², introduced in France in the 1790s.

Learn more

One hectare is 10,000 m², or 2.471 acres, so a 5 ha field is 12.36 acres.

Related guides: Imperial vs metric: differences and quick conversion tricks

Frequently asked

How many acres are in a hectare?
1 hectare = 2.471053815 acres. In the other direction, 1 acre = 0.404685642 hectares.
What is a hectare?
A hectare is 10,000 square metres: a square 100 metres on a side. It is the international unit for agricultural and forestry land.
What is a acre?
An acre is 43,560 square feet, or 4,046.8564224 square metres — historically the land one ox team could plough in a day. It is the standard US and UK land unit.
How many acres is a hectare?
One hectare is 2.471 acres.

Related area conversions

Square Feet to Square Metres Square Metres to Square Feet Acres to Hectares Acres to Square Feet Square Miles to Square Kilometres Square Inches to Square Centimetres Square Yards to Square Feet