Convertly.

Convert Acres to Hectares

Convert acres to hectares instantly (Acres to Hectares). 1 ac = 0.4046856422 ha.

Converter

acre (ac)
hectare (ha)

ac to ha conversion table

AcresHectares
1 ac0.40468564 ha
2 ac0.80937128 ha
5 ac2.0234282 ha
10 ac4.0468564 ha
25 ac10.117141 ha
50 ac20.234282 ha
100 ac40.468564 ha
1000 ac404.68564 ha

Formula

ha = ac × 0.4046856422

Worked example

25 ac × 0.4046856422 = 10.11714106 ha

Popular ac to ha conversions

Quick answers for common values, each with its own formula and worked steps.

  • 1 acres to hectares

    1 ac = 0.404686 ha. Formula, working and reverse conversion.

    convertly.website/1-acres-to-hectares/
  • 2 acres to hectares

    2 ac = 0.809371 ha. Formula, working and reverse conversion.

    convertly.website/2-acres-to-hectares/
  • 5 acres to hectares

    5 ac = 2.02343 ha. Formula, working and reverse conversion.

    convertly.website/5-acres-to-hectares/
  • 10 acres to hectares

    10 ac = 4.04686 ha. Formula, working and reverse conversion.

    convertly.website/10-acres-to-hectares/
  • 20 acres to hectares

    20 ac = 8.09371 ha. Formula, working and reverse conversion.

    convertly.website/20-acres-to-hectares/
  • 25 acres to hectares

    25 ac = 10.1171 ha. Formula, working and reverse conversion.

    convertly.website/25-acres-to-hectares/
  • 50 acres to hectares

    50 ac = 20.2343 ha. Formula, working and reverse conversion.

    convertly.website/50-acres-to-hectares/
  • 100 acres to hectares

    100 ac = 40.4686 ha. Formula, working and reverse conversion.

    convertly.website/100-acres-to-hectares/
  • 500 acres to hectares

    500 ac = 202.343 ha. Formula, working and reverse conversion.

    convertly.website/500-acres-to-hectares/
  • 1000 acres to hectares

    1000 ac = 404.686 ha. Formula, working and reverse conversion.

    convertly.website/1000-acres-to-hectares/

About acres and hectares

Acre (ac)

The international acre is exactly 4,046.8564224 square meters, or 43,560 square feet. It is used for land area in the US and UK.

Hectare (ha)

A hectare is 10,000 square meters, the area of a 100 m by 100 m square. It is used for farmland, forestry and land management.

Both are units of area; the base unit used internally is m².

Notes

ac to ha FAQs

How do I convert acres to hectares?

Multiply the number of acres by 0.4046856422 to get hectares. For example, 25 ac × 0.4046856422 = 10.1171 ha.

How many hectares are in one acre?

1 ac = 0.4046856422 ha and 1 ha = 2.471053815 ac. To go the other way, use the hectares to acres converter.

How many hectares are in 5 acres?

5 ac = 2.02343 ha, rounded to 6 significant digits. Change the value in the converter above for any other amount.

How many hectares are in 10 acres?

10 ac = 4.04686 ha, rounded to 6 significant digits.

Is the ac to ha conversion exact?

Yes. The factor 0.40468564224 follows directly from the unit definitions (The international acre is exactly 4,046.8564224 square meters, or 43,560 square feet; a hectare is 10,000 square meters, the area of a 100 m by 100 m square), so the only rounding is in the digits you choose to display.

What is the difference between acres and hectares?

The international acre is exactly 4,046.8564224 square meters, or 43,560 square feet. It is used for land area in the US and UK. A hectare is 10,000 square meters, the area of a 100 m by 100 m square. It is used for farmland, forestry and land management.

Related converters

Reverse: Hectares to acres.

Browse all area converters.

Guide

Read: What Is a Hectare?.

Related calculators