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Hectare to Acre Converter

Instant, two-way conversion across common engineering units.

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1 ha = 2.4710538 ac(Hectare → Acre)

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Converting hectares to acres

To convert hectares to acres, multiply the value by 2.4710538. Area figures drive floor space schedules, finish quantities and cost per area, so both metric and imperial results are shown at full precision.

Visual scale

To scale
1 hectare = 2.4710538 acres.
1 acre = 0.40468564 hectares.

Hectare (ha)

The hectare (ha) equals 10,000 square meters and is the standard metric unit for land area.

Origin
A non-SI unit accepted for use with SI, defined as one square hectometer.
Where it is used
Used for site areas, masterplanning, agriculture and land registry records.
Relation to SI
1 ha = 10,000 m², about 2.471 acres.

Acre (ac)

The acre is the traditional English land unit, equal to 43,560 square feet.

Origin
Originally the area a yoke of oxen could plough in a day, later fixed by statute and now defined from the international yard.
Where it is used
Used for land parcels, development sites and agricultural holdings in the US and UK.
Relation to SI
1 acre = 4,046.8564224 m², about 0.4047 ha.

Frequently asked questions

How many acres are in one hectare?

1 ha equals 2.4710538 ac.

How do I convert hectares to acres?

Multiply the value by 2.4710538. For example, 10 ha equals 24.710538 ac.

How do I convert back from acres to hectares?

1 ac equals 0.40468564 ha. The converter above works in both directions, so you can type into either field.

When should I use hectares instead of acres?

Hectares are the metric standard for site and land areas in most planning systems, while acres remain common in US and UK land records. Use whichever the local authority requires and quote the other in brackets.

How do I convert a length ratio into an area ratio?

Square the length factor. Because 1 ft = 0.3048 m, one square foot is 0.3048², which is 0.09290304 m².

Is this area converter free to use?

Yes. Every unit conversion runs in your browser, needs no account and is free for professional use.

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