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Chain (ch)

66 feet, or 4 rods; a classic surveying unit.

Result20,116.8

1 chain = 20,116.8 millimeters

Chain at a glance

Unit nameChain (plural: chains)
Symbolch
Quantity measuredLength
Measurement systemUS customary
Also known aschains, gunter's chain
Definition exact?Yes — exact by definition

1 chain in other length units

Unit1 ch equals
Nanometer20,116,800,000 nm
Micrometer20,116,800 µm
Millimeter20,116.8 mm
Centimeter2,011.68 cm
Decimeter201.168 dm
Meter20.1168 m
Kilometer0.0201168 km
Inch792 in
Foot66 ft
Yard22 yd
Mile0.0125 mi
Nautical mile0.010862203 nmi
Angstrom201,168,000,000 Å
Mil792,000 mil
Fathom11 ftm
Rod4 rd
Furlong0.1 fur
League0.004166667 lea
Astronomical unit1.34472502 × 10⁻¹⁰ au
Light-year2.12634744 × 10⁻¹⁵ ly
Parsec6.51941088 × 10⁻¹⁶ pc

Frequently asked questions

What is a chain?
66 feet, or 4 rods; a classic surveying unit.
What is the symbol for the chain?
The symbol for the chain is ch. It measures length.
How many millimeters are in a chain?
1 chain = 20,116.8 millimeters.
How many centimeters are in a chain?
1 chain = 2,011.68 centimeters.
How many meters are in a chain?
1 chain = 20.1168 meters.