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Hectares to Acres (ha to ac) Converter

1 hectare (ha) = 2.47105 acres (ac). To convert hectares to acres, multiply by 2.47105: 2 ha × 2.47105 = 4.94211 ac.

1 ha = 2.4710538147 ac
Convert the other way: Acres to Hectares

Quick facts

How to convert hectares to acres

  1. Take the value in hectares.
  2. Multiply it by 2.47105 (the number of acres in one hectare).
  3. Round the result to the precision you need.
ac = ha × 2.47105

Worked example (a small field): 2 ha × 2.47105 = 4.94211 ac.

To convert acres back to hectares, multiply by 0.404686, or divide by 2.47105.

Source: NIST SP 811 (2008). Marla and kanal use the Punjab standard stated in their definitions; local sizes can differ.

Hectares to Acres conversion table

Hectares to Acres conversion table
Hectares [ha]Acres [ac]
0.01 ha0.0247105381 ac
0.1 ha0.2471053815 ac
1 ha2.4710538147 ac
2 ha4.9421076293 ac
3 ha7.413161444 ac
5 ha12.3552690734 ac
10 ha24.7105381467 ac
20 ha49.4210762934 ac
50 ha123.5526907336 ac
100 ha247.1053814672 ac
1000 ha2471.0538146717 ac

ha to ac chart from 1 to 100

Acres to Hectares conversion table

Acres to Hectares conversion table
Acres [ac]Hectares [ha]
0.01 ac0.0040468564 ha
0.1 ac0.0404685642 ha
1 ac0.4046856422 ha
2 ac0.8093712845 ha
3 ac1.2140569267 ha
5 ac2.0234282112 ha
10 ac4.0468564224 ha
20 ac8.0937128448 ha
50 ac20.234282112 ha
100 ac40.468564224 ha
1000 ac404.68564224 ha

Hectares vs Acres

HectareAcre
Symbolhaac
Equals1 ha = 2.47105 ac1 ac = 0.404686 ha

What is a hectare?

Equal to 10,000 square meters, or a 100-by-100 meter square. Used internationally for land and agricultural area.

What is an acre?

A US customary and imperial unit historically based on the area a yoke of oxen could plow in a day. Used in the US and UK for land and real estate.

Frequently asked questions

How many acres are in a hectare?

There are 2.47105 acres in 1 hectare (1 ha = 2.4710538147 ac).

How many hectares are in an acre?

There are 0.404686 hectares in 1 acre (1 ac = 0.4046856422 ha).

How do I convert hectares to acres?

Multiply the number of hectares by 2.47105. For example, 10 ha × 2.47105 = 24.7105 ac. To convert back, multiply by 0.404686.

What is 10 ha in acres?

10 ha = 24.7105 ac.

What is 100 ha in acres?

100 ha = 247.105 ac.

Is the conversion exact?

Yes. The factor comes from the official definitions of both units (NIST SP 811 (2008). Marla and kanal use the Punjab standard stated in their definitions; local sizes can differ). Results are shown to up to 10 decimal places; round them to suit your purpose.

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Reviewed by

Dr. Muhammad Amjad Khadim PhD Mathematics

Dr. Muhammad Amjad Khadim holds a PhD in Mathematics. He writes and reviews the guides on pakmath.com and checks every formula, conversion factor and worked example against published standards and official guidance before it goes live. Spotted an error? Tell us and it will be corrected.

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First published 28 October 2026 · Last reviewed 5 November 2026