How to convert acres to hectares
To convert a measurement in acres to hectares, multiply the value by 0.40468564224. The conversion factor comes from the relationship between both units and the square meter.
For example, to convert 5 ac to hectares: 5 × 0.40468564224 = 2.023428 ha.
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.
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.
Acres to hectares worked examples
Here are some common values converted:
1 ac = 0.40468564224 ha 5 ac = 2.023428 ha 10 ac = 4.046856 ha 50 ac = 20.234282 ha 100 ac = 40.468564 ha
Frequently asked questions
How many hectares are in one acre?
One acre (ac) equals 0.40468564224 hectares (ha). Multiply any value in acres by 0.40468564224 to convert to hectares.
How do I convert acres to hectares?
Multiply the value in acres by 0.40468564224. For example, 5 ac × 0.40468564224 = 2.023428 ha.
How do I convert hectares to acres?
Multiply the value in hectares by 2.471054, or divide by 0.40468564224. Use the swap button on the converter above to reverse the direction.
Is the acre to hectare 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 acres to hectares?
The formula is: ha = ac × 0.40468564224. This comes from the definition of both units relative to the square meter.