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Length Conversion

Our online conversion calculators provide a quick and easy way to perform length conversions between the Metric System, US Customary Units, and the Imperial System.

Length can be measured using various measurement systems, such as:

US Customary Units
 (or Imperial System)

  • inches (in)
  • feet (ft)
  • yards (yd)
  • miles (mi)

Metric System

  • millimeters (mm)
  • centimeters (cm)
  • decimeters (dm)
  • meters (m)
  • kilometers (km)

Note: For length conversions, US Customary Units and the Imperial System are equivalent.

Below is a list of the length conversions available. Select one of the conversion calculators to convert a length value: