Convert square pole to acre (US survey) [ac] Online | Free area Converter

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Square Pole


A square pole is another name for a square rod or square perch, a traditional unit of area used in land measurement.



  • 1 pole (rod) = 16.5 feet



  • 1 square pole = 16.5 ft × 16.5 ft = 272.25 square feet ≈ 25.29 square meters



  • 160 square poles = 1 acre



Square poles have historically been used in surveying and describing land parcels.



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.




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