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Area conversion

Acre to Hectare

One acre is 0.40469 hectares. Enter any value below to convert it instantly, or use the reference table further down for the numbers you need most often.

1 ac = 0.40469 haInstantFree

Conversion rate

1 ac = 0.40469 ha

ha = ac × 0.40469

Result0.40469

1 ac = 0.40469 ha

1 ac in every area unit
mm²4,046,856,422.4
cm²40,468,564.22
m²4,046.856
ha0.40469
km²0.0040469
in²6,272,640
ft²43,560
yd²4,840
ac1

Reference

Acre to Hectare table

The values people look up most often, rounded for practical use.

Acre (ac)Hectare (ha)
1 ac0.40469 ha
2 ac0.80937 ha
3 ac1.214057 ha
5 ac2.023428 ha
10 ac4.046856 ha
15 ac6.070285 ha
20 ac8.093713 ha
25 ac10.11714 ha
50 ac20.23428 ha
100 ac40.46856 ha
250 ac101.171 ha
500 ac202.343 ha
1,000 ac404.686 ha

How to convert acres to hectares

Multiply the number of acres by 0.40469. That is the whole calculation: ha = ac × 0.40469. To go back the other way, divide instead, or multiply by 2.471054.

Worked example: 12 acres × 0.40469 = 4.856228 hectares.

Where this conversion comes up

Area conversions appear in property listings, flooring, land and gardening. Remember that area factors are the square of the length factors — a foot is 0.3048 m, but a square foot is 0.0929 m², not 0.3048.

Quick answers

More conversions

Other area conversions

ha → ac1 = 2.471054m² → ft²1 = 10.76391ft² → m²1 = 0.092903m² → ac1 = 0.00024711ft² → yd²1 = 0.11111cm² → in²1 = 0.155

Answers

Frequently asked questions

One acre equals 0.40469 hectares. Going the other way, one hectare is 2.471054 acres.

Use ha = ac × 0.40469. The converter above applies it for you, but the formula is useful in a spreadsheet — put your value in column A and the formula in column B.

The underlying factor is the exact internationally defined value. Results are rounded for readability, so very long decimals are trimmed — but the calculation itself carries full double precision.

Yes — press the ⇄ swap button in the converter, or use the dedicated Hectare to Acre page.

No. The converter runs entirely in your browser, there is no account, and nothing you type is sent anywhere.

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