Source: wikibot/chain-unit
= Chain (unit)
{wiki=Chain_(unit)}
A "chain" is a unit of measurement commonly used in land surveying and agriculture. It is equal to 66 feet or 22 yards. The chain is an important unit in various historical and practical contexts, particularly in the measurement of large areas of land. In terms of area, one chain is equivalent to 0.01 square kilometers or 0.00621371 square miles.