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

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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.




Square Mile (US Survey)


The square mile (US survey) is a unit of area used in the United States for land measurement based on the US survey foot. It represents a square with sides 1 mile long, where a mile is defined using the survey foot rather than the international foot.


1 US survey mile = 5,280 US survey feet

1 square mile (US survey) ≈ 2.589998 km² (slightly different from the international square mile of 2.59 km²)


This unit is mostly used in land surveying and mapping within the US.



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Convert square chain [ch^2] to Other Area Units

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