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Area conversion

Hectares to Acres (ha to ac)

1 ha = 2.471 ac — multiply the number of hectares by 2.471.

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Hectares to Acres conversion chart

hectares acres
1 ha 2.471 ac
2 ha 4.9421 ac
3 ha 7.4132 ac
4 ha 9.8842 ac
5 ha 12.3553 ac
6 ha 14.8263 ac
7 ha 17.2974 ac
8 ha 19.7684 ac
9 ha 22.2395 ac
10 ha 24.7105 ac
12 ha 29.6526 ac
15 ha 37.0658 ac
18 ha 44.479 ac
20 ha 49.4211 ac
25 ha 61.7763 ac
30 ha 74.1316 ac
40 ha 98.8422 ac
50 ha 123.553 ac
60 ha 148.263 ac
75 ha 185.329 ac
100 ha 247.105 ac

How to convert by hand

1 ha = 2.47105381 ac

Because this is a linear conversion, the ratio never changes: every hectare is always 2.471 ac, whatever the size of the number.

Worked example: 10 ha × 2.471 = 24.7105 ac .

Related conversions

About hectares and acres

Area conversions turn up in property and land, where listings use square metres in one market and square feet or acres in another.

Hectare

Metric

10,000 square metres — a square 100 m on each side.

Commonly used for: Farmland and land area in most of the world.

Acre

US / Imperial

43,560 square feet, about 0.4047 hectares.

Commonly used for: Farmland and land parcels in the US and UK.

Questions

How many acres are in one hectare?

One hectare equals 2.471 ac. To convert any amount, multiply the number of hectares by 2.471.

What is 5 ha in ac?

5 ha = 12.3553 ac. Type any value into the converter above to get an exact answer.

How do I convert acres back to hectares?

Divide by 2.471 instead of multiplying — or use our Acres to Hectares converter.

Is this converter accurate?

Yes. Linear conversions use the internationally agreed factors published by NIST (SP 811), and temperature conversions use the exact defining formulas. Calculations run at full double precision and are only rounded for display.

Need a different unit?

The full converter handles length, mass, volume, area, speed and temperature — with every metric and US/UK unit in one place.

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