Convert Millimeter to Chain

Select a category

→

--

Conversion Formula:

ch = mm × 0.00005

Convert Millimeter to Chain (mm to ch) instantly with accurate, readable results.

Use our Length Unit Converter to quickly convert between meters, kilometers, feet, inches, miles, and more. This powerful unit conversion tool supports both metric and imperial systems, making it ideal for travel, engineering, education, and everyday use. Whether you're calculating distances or comparing measurements, our length unit conversion calculator ensures fast and accurate results every time.

From unit

Millimeter (mm) — one thousandth of a meter

Used for precision work, machining, and rainfall depth reporting. Suitable for tolerances and tiny parts.

  • Symbol: mm
  • System: SI derived unit
  • Exact relations: 1 mm = 0.001 m = 0.1 cm
  • Imperial/US equivalents: 1 mm = 0.0393700787 in
  • Typical examples: screw diameters, gasket thickness, PCB traces
To unit

Chain - traditional surveying length unit

Chain is a historical unit used in land surveying, specifically Gunter’s chain. Used on cadastral maps and by railways and surveyors across the English-speaking world.

  • Symbols: ch (common)
  • System: Imperial/US customary (historic surveying)
  • Exact relations: 1 chain = 66 ft = 22 yd = 4 rods = 100 links = 1/80 mile; 10 chains = 1 furlong
  • Metric equivalents: 1 chain = 20.1168 m (exact)
  • Typical examples: UK railway distances recorded in miles and chains; a cricket pitch length is 1 chain (22 yd)