Convert between Chain (US survey) and other Length units.
Chain (US Survey) as a Unit of Length
A chain is a unit of length that was historically used in land surveying. In the United States, one chain is defined as exactly 66 feet or 20.1168 meters. The chain was developed in the 16th century and was originally based on the length of surveyor's chains made from metal links, which were used to measure distances accurately across large tracts of land.
Chains are commonly used in land measurement and are often employed in conjunction with other units, such as acres. For example, a surveyor might use chains to determine the area of a parcel of land, with each acre corresponding to approximately 10 chains by 10 chains.
Despite its historical significance, the chain is now largely replaced by more universally recognized metric measurements, but it remains a notable unit within certain surveying contexts.
