Convert acre (US survey) [ac] to square meter [m^2] Online | Free area Converter

Acre (US Survey) [ac]


The acre (US survey) is a unit of area used mainly in the United States for land measurement, based on the US survey foot. It is slightly different from the international acre due to the foot definition.



  • 1 US survey acre = 43,560 US survey square feet



  • 1 US survey acre ≈ 4,046.87261 square meters



  • Slightly larger than the international acre by about 0.0005%.



It is commonly used in land surveying, real estate, and agriculture.



Square Meter [m²]


A square meter (m²) is the SI unit of area. It represents the area of a square with sides that are 1 meter long. Square meters are commonly used to measure spaces like rooms, land, and buildings. For example, a room that is 5 meters long and 4 meters wide has an area of 20 m² (5 × 4 = 20).



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