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Hectares to Acres Converter

Convert hectare to acre instantly. 1 ha = 2.471053815 ac, worked steps and a full reference table.

Formula
ac = ha × 2.471053815

How to use it

  • Type the value in hectare — the result updates as you type.
  • Use Swap to flip the direction, or change either dropdown to convert between any two units.
  • Click the result to copy it. The URL updates too, so you can bookmark or share the exact conversion.

Examples

1 ha2.471053815 ac
5 ha12.35526907 ac
10 ha24.71053815 ac
100 ha247.1053815 ac

One hectare equals 2.4710538 acres (ac). To convert hectares to acres, multiply by 2.4710538; to go back the other way, multiply by 0.40468564 instead.

The converter above does it as you type and shows the working underneath, so you can check the arithmetic rather than take the number on trust.

What hectares and acres actually measure

Hectare (ha) — A hectare is 10,000 square metres — a square 100 m on each side. Farmland and land planning in most countries.

Acre (ac) — An acre is 43,560 square feet, about 0.405 hectares — historically the area a team of oxen could plough in a day. Land in the US, UK and much of the Commonwealth.

Hectares to Acres conversion table

The most common values, worked out in advance. Anything not listed can be typed straight into the converter.

haac
1 ha2.4710538 ac
2 ha4.9421076 ac
5 ha12.355269 ac
10 ha24.710538 ac
25 ha61.776345 ac
50 ha123.55269 ac
100 ha247.10538 ac

How to convert hectares to acres by hand

Multiply the number of hectares by 2.4710538.

For example, 25 ha × 2.4710538 = 61.776345 ac.

Going the other way, divide by 2.4710538 — or multiply by 0.40468564, which is the same thing and easier to do in your head.

Everything runs in your browser

There is no server involved in the calculation. The numbers you type never leave your device, nothing is logged, and the page keeps working with no connection once it has loaded. That is not a marketing line — it is simply how the tool is built, because a calculation like this has no reason to touch a network.

Questions people ask

How many ac are in 1 ha?

1 ha equals exactly 2.471053815 ac. Multiply any value in hectare by 2.471053815 to get acre.

Is anything uploaded to a server?

No. The whole calculation happens in your browser. Nothing is sent anywhere, and the page keeps working offline once loaded.

Runs entirely in your browser. Nothing you type is uploaded, logged or shared.

Last updated 18 August 2026