Acres to Hectares Converter

Acres to hectares is the standard land conversion for farms, parks and real estate. One acre is 0.40468564 ha.

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0.809371

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How to use the Acres to Hectares Converter

  1. Type the number of acres in the box
  2. The value in hectares appears instantly
  3. Use the table for common values, or switch units to convert anything else

Acres to Hectares formula

ha = ac × 0.404685642

Example: 2 ac × 0.40468564 = 0.809371 ha.

💡 A 640-acre square mile is 259 ha.

Acres to Hectares conversion chart

AcresHectares
0.25 ac0.101171 ha
0.5 ac0.202343 ha
1 ac0.404686 ha
2 ac0.809371 ha
5 ac2.02343 ha
10 ac4.04686 ha
20 ac8.09371 ha
40 ac16.1874 ha
80 ac32.3749 ha
100 ac40.4686 ha
160 ac64.7497 ha
320 ac129.499 ha
640 ac258.999 ha
1,000 ac404.686 ha

Frequently asked questions

How do I convert acres to hectares?

Use the formula ha = ac × 0.404685642. For example, 2 ac = 0.809371 ha.

How many hectares are in 1 acre?

1 ac = 0.40468564 ha.

Any handy reference points?

A 640-acre square mile is 259 ha.

Is this acres to hectares converter accurate?

Yes. It uses exact definitions (for example, 1 inch = 2.54 cm and 1 lb = 0.45359237 kg) and shows up to 10 significant digits.

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