Millimeters to Chains

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ch =
mm * 4.9709596e-05
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More information: Millimeters
Chains to Millimeters (Swap Units) Millimeters to Chains table


The millimetre is a unit of length in the metric system, equivalent to one thousandth of a metre (the SI base unit of length).

ch =
mm * 4.9709596e-05


Unit of length equal to 66 feet, used especially in the U.S. public land surveys. The original measuring instrument (Gunter's chain) was literally a chain consisting of 100 iron links, each 7.92 inches long. Steel-ribbon tapes began to supersede chains around 1900, but surveying tapes are often still called "chains" and measuring with a tape is often called "chaining". The chain is a convenient unit in cadastral surveys because 10 square chains equal 1 acre.

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