Hectares to Acres converter

How to convert hectares to acres

To convert hectares to acres, use ac = ha × 2.47105. For example, 50 ha is 123.553 ac. Type any value in the converter above and the result updates instantly.

The Hectares to Acres formula

The conversion is ac = ha × 2.47105. One hectare equals 2.47105 ac. This conversion is exact: hectare is defined precisely in terms of acre, so the only rounding is in the digits shown.

Hectares to Acres conversion table

Where hectares and acres are used

Hectares measure land area in most countries: 1 hectare is 10,000 square meters.

Acres measure land area in the United States and the United Kingdom, mainly for farms and large plots.

Worked examples

These examples use the formula above, so you can check the converter or do the same by hand:

• 0.5 ha = 1.23553 ac
• 2 ha = 4.94211 ac
• 10 ha = 24.7105 ac

Converting hectares to acres in your head

As a quick estimate, multiply by 2.5 (rounded).

Acres to Hectares reference table

For the opposite direction, these values are handy to have at hand:

Common mistakes to avoid

• Square units are not the same as length units: 1 m² is about 10.76 ft², not 3.28 ft².
• Real estate listings may use gross or net areas; the conversion is exact but the measured area may differ.

About this converter

The converter accepts whole numbers, decimals and negative values, gives the result as you type, and uses full precision internally, so what you copy is as accurate as it can be. It runs in your browser: nothing you type is sent to a server, it keeps working offline once the page has loaded, and there is nothing to install.

Need the opposite direction? Use the Acres to Hectares converter.