How to convert acres to square meters
To convert a measurement in acres to square meters, multiply the value by 4,046.8564. The conversion factor comes from the relationship between both units and the square meter.
For example, to convert 5 ac to square meters: 5 × 4,046.8564 = 20,234.2821 m².
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 square meter?
A square meter is the SI derived unit of area, equal to the area of a square one meter on each side, about 10.764 square feet. The square meter follows directly from the meter, the SI base unit of length. It is the standard unit for floor area and land measurement across most of the world, often written 'sqm' in real estate.
Common uses of square meters include: Floor area and room size in real estate; Flooring, tiling, and carpet ordering; Land plot size in metric countries; Solar panel and roofing coverage.
Acres to square meters worked examples
Here are some common values converted:
1 ac = 4,046.8564 m² 5 ac = 20,234.2821 m² 10 ac = 40,468.5642 m² 50 ac = 202,342.8211 m² 100 ac = 404,685.6422 m²
Frequently asked questions
How many square meters are in one acre?
One acre (ac) equals 4,046.8564 square meters (m²). Multiply any value in acres by 4,046.8564 to convert to square meters.
How do I convert acres to square meters?
Multiply the value in acres by 4,046.8564. For example, 5 ac × 4,046.8564 = 20,234.2821 m².
How do I convert square meters to acres?
Multiply the value in square meters by 0.000247105381, or divide by 4,046.8564. Use the swap button on the converter above to reverse the direction.
Is the acre to square meter 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 square meters?
The formula is: m² = ac × 4,046.8564. This comes from the definition of both units relative to the square meter.