Convert square foot (US survey) to square chain [ch^2] Online | Free area Converter

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Square Foot (US Survey)


The square foot (US survey) is a unit of area based on the US survey foot, which is slightly longer than the international foot. It is mainly used in land surveying and mapping in the United States.



  • 1 US survey foot = 1200⁄3937 meters (approximately 0.3048006096 m)



  • 1 square foot (US survey) ≈ 0.0929034116 m²



This unit helps maintain consistency in US land measurements, especially in legal and cadastral contexts.


Square Chain [ch²]


A square chain (ch²) is a unit of area used in land surveying, especially in the US and UK. It represents the area of a square with sides one chain long.



  • 1 chain = 66 feet (20.1168 meters)



  • 1 square chain = 66 ft × 66 ft = 4,356 square feet ≈ 404.69 m²



  • 10 square chains = 1 acre



Square chains are used to measure land parcels and agricultural fields.





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Convert square foot (US survey) to Other Area Units

🔄 square foot (US survey) to square meter [m^2]
🔄 square foot (US survey) to square kilometer [km^2]
🔄 square foot (US survey) to square centimeter [cm^2]
🔄 square foot (US survey) to square millimeter [mm^2]
🔄 square foot (US survey) to square micrometer [µm^2]
🔄 square foot (US survey) to hectare [ha]
🔄 square foot (US survey) to acre [ac]
🔄 square foot (US survey) to square mile [mi^2]
🔄 square foot (US survey) to square yard [yd^2]
🔄 square foot (US survey) to square foot [ft^2]
🔄 square foot (US survey) to square inch [in^2]
🔄 square foot (US survey) to square hectometer [hm^2]
🔄 square foot (US survey) to square dekameter [dam^2]
🔄 square foot (US survey) to square decimeter [dm^2]
🔄 square foot (US survey) to square nanometer [nm^2]
🔄 square foot (US survey) to are [a]
🔄 square foot (US survey) to barn [b]
🔄 square foot (US survey) to square mile (US survey)
🔄 square foot (US survey) to circular inch
🔄 square foot (US survey) to township
🔄 square foot (US survey) to section
🔄 square foot (US survey) to acre (US survey) [ac]
🔄 square foot (US survey) to rood
🔄 square foot (US survey) to square chain [ch^2]
🔄 square foot (US survey) to square rod
🔄 square foot (US survey) to square rod (US survey)
🔄 square foot (US survey) to square perch
🔄 square foot (US survey) to square pole
🔄 square foot (US survey) to square mil [mil^2]
🔄 square foot (US survey) to circular mil
🔄 square foot (US survey) to homestead
🔄 square foot (US survey) to sabin
🔄 square foot (US survey) to arpent
🔄 square foot (US survey) to cuerda
🔄 square foot (US survey) to plaza
🔄 square foot (US survey) to varas castellanas cuad
🔄 square foot (US survey) to varas conuqueras cuad
🔄 square foot (US survey) to Electron cross section
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