Convert square chain [ch^2] to acre [ac] Online | Free area Converter

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.




Acre [ac]


An acre (ac) is a unit of area commonly used in the United States and other countries for measuring land. One acre equals 43,560 square feet or about 4,047 square meters.

1 acre ≈ 0.4047 hectares or 0.004047 square kilometers.

Acres are often used to describe the size of farms, plots, and real estate.



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