Acre. You can also type 5'11", 6 ft 2 in, 1/4 cup or 2 + 3.5.

To
0.4046856422

Hectare

Formula: × 0.40468564224 (exact, by definition)

Precision and number format
Convert a list

One value per line, or paste a column from a spreadsheet (the first cell of each row is used). Up to 5,000 lines, ac to ha.

Converted (Hectare)

    Convert acres to hectares

    This tool converts acres to hectares the moment you type — 1 ac = 0.4046856422 ha. It's the same trusted math behind the full unit converter, focused on the single acres-to-hectares conversion so you get the answer without any distractions.

    To convert acres to hectares, multiply the number of acres by 0.4046856422. Every calculation runs client-side, so your numbers never leave your device, and there's no sign-up, no limit, and nothing to install.

    acres to hectares conversion table

    acres to hectares conversion table
    Acres (ac)Hectares (ha)
    1 ac0.4046856422 ha
    2 ac0.8093712845 ha
    3 ac1.214056927 ha
    5 ac2.023428211 ha
    10 ac4.046856422 ha
    25 ac10.11714106 ha
    50 ac20.23428211 ha
    100 ac40.46856422 ha

    Need a different conversion? See all unit converters.

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    acres to hectares Converter — frequently asked questions

    How do I convert acres to hectares?
    Type a value in the acres field and the hectares result appears instantly. Everything is calculated in your browser, so there's nothing to submit and no wait.
    How many hectares are in an acre?
    One acre is 0.4046856422 hectares. To convert acres to hectares, multiply the number of acres by 0.4046856422.
    Is my data sent to a server?
    No. The conversion runs entirely in your browser with JavaScript — nothing is uploaded, logged, or stored. It keeps working offline once the page has loaded.
    Is this converter free?
    Yes. No sign-up, no payment details, and no limit on how many conversions you can do.

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