How to convert hectares to acres
To convert a measurement in hectares to acres, multiply the value by 2.471054. The conversion factor comes from the relationship between both units and the square meter.
For example, to convert 5 ha to acres: 5 × 2.471054 = 12.355269 ac.
What is a hectare?
A hectare is a metric unit of area equal to 10,000 square meters, or a square 100 meters on each side, about 2.471 acres. Coined in 1795 from the Greek 'hekaton' (hundred) and 'are', the hectare is the standard unit for land area in agriculture and forestry across most of the world, filling the gap between the square meter and the square kilometer.
Common uses of hectares include: Farmland and agricultural plot size; Forestry and conservation areas; Real estate land parcels; Parks and land-use planning.
What is a acre?
An acre is an imperial and US customary unit of area equal to 43,560 square feet, or about 4,046.86 square meters (roughly 0.405 hectares). The acre originally meant the area a yoke of oxen could plow in a day, standardized as 1 chain by 1 furlong (66 by 660 feet). It remains the standard unit for land and farm area in the US and UK.
Common uses of acres include: Farmland and rural land size; Residential lot and property size in the US; Real estate and development parcels; Sports field and park area references.
When you need to convert hectares to acres
Farmers, foresters, and land buyers frequently convert hectares to acres when comparing agricultural land between metric and imperial systems. One hectare equals about 2.47 acres, so a 10-hectare farm is roughly 24.7 acres.
Hectares to acres worked examples
Here are some common values converted:
1 ha = 2.471054 ac 5 ha = 12.355269 ac 10 ha = 24.710538 ac 50 ha = 123.552691 ac 100 ha = 247.105381 ac
Frequently asked questions
How many acres are in one hectare?
One hectare (ha) equals 2.471054 acres (ac). Multiply any value in hectares by 2.471054 to convert to acres.
How do I convert hectares to acres?
Multiply the value in hectares by 2.471054. For example, 5 ha × 2.471054 = 12.355269 ac.
How do I convert acres to hectares?
Multiply the value in acres by 0.40468564224, or divide by 2.471054. Use the swap button on the converter above to reverse the direction.
Is the hectare to acre conversion exact?
Yes. Area conversions derive from the exact 1959 international definitions of the meter, yard, and foot, so the factors are exact.
What is the formula for hectares to acres?
The formula is: ac = ha × 2.471054. This comes from the definition of both units relative to the square meter.