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Convert hectares to acres (ha to ac)

Type a value in hectares or in acres: the other field updates as you type. Below you will find the formula, a worked example and a ha to ac chart.

Updated on

1 ha = 2.47105 ac

How to convert hectares to acres

Formula: ac = ha × 2.47105

Worked example: 10 ha → 10 × 2.47105 = 24.7105 ac

Multiply hectares by 2.47105 to get acres. A 10 hectare farm covers about 24.7 acres, and 100 hectares make 1 square kilometer, or about 247 acres.

Hectares to acres conversion chart

Hectares (ha)Acres (ac)
1 ha2.47105 ac
2 ha4.94211 ac
3 ha7.41316 ac
4 ha9.88422 ac
5 ha12.3553 ac
6 ha14.8263 ac
7 ha17.2974 ac
8 ha19.7684 ac
9 ha22.2395 ac
10 ha24.7105 ac
12 ha29.6526 ac
15 ha37.0658 ac
20 ha49.4211 ac
25 ha61.7763 ac
30 ha74.1316 ac
40 ha98.8422 ac
50 ha123.553 ac
75 ha185.329 ac
100 ha247.105 ac
250 ha617.763 ac
500 ha1,235.53 ac
1,000 ha2,471.05 ac

What is a hectare?

The hectare equals 10,000 square meters, a square 100 m on each side. It is the international unit for farms, forests and land plots. One hectare is about 2.47 acres; a full-size soccer pitch covers about 0.7 hectare.

What is an acre?

The acre equals 43,560 square feet, about 4,047 m² or 0.405 hectare. It is the US and UK unit for land, lots and farms. An American football field, end zones included, covers about 1.32 acres.

Frequently asked questions

How many acres are in a hectare?

A hectare equals 2.47105 acres. To convert any value, multiply the number of hectares by 2.47105.

How do you convert hectares to acres?

Use the formula ac = ha × 2.47105. Example: 10 ha → 10 × 2.47105 = 24.7105 ac.

How many hectares are in an acre?

An acre equals 0.404686 hectares. That is the reverse conversion, from acres to hectares.

Results are rounded to 6 significant digits; the conversion factors are the exact legal definitions.