Length Converter

This length converter is a handy online unit converter that helps you quickly convert various length units. The most common ones include kilometer, meter, centimeter, millimeter, and mile. Keep reading to find the formulas behind the length conversions and to read about the background of various length units.

List of length units

Our length converter is equipped with the most popular length units as listed below:

  • Kilometer (km)
  • Meter (m)
  • Centimeter (cm)
  • Millimeter (mm)
  • Mile (mi)
  • Nautical mile (NM)
  • Yard (yd)
  • Foot (ft)
  • Inch (in)
  • Angstrom (A)

Length conversions

The length conversion formulas below show you how various length units can be converted into centimeters:

  • 1 kilometer [km] = 100000 centimeter [cm]
  • 1 meter [m] = 100 centimeter [cm]
  • 1 millimeter [mm] = 0.1 centimeter [cm]
  • 1 mile [mi] = 160934.4 centimeter [cm]
  • 1 nautical mile (NM) = 185200 centimeter [cm]
  • 1 yard (yd) = 91.44 centimeter [cm]
  • 1 foot (ft) = 30.48 centimeter [cm]
  • 1 inch (in) = 2.54 centimeter [cm]
  • 1 angstrom (A) = 0.00000001 centimeter [cm]

Length conversion table

The table below shows the conversion factors between the popular length units.

km m cm mm mi NM yd ft in A
1 km 1 1000 100000 1000000 0.621371192 0.539956803 1093.613298 3280.839895 39370.07874 1E+13
1 m 0.001 1 100 1000 0.000621371 0.000539957 1.093613298 3.280839895 39.37007874 10000000000
1 cm 0.00001 0.01 1 10 6.21371E-06 5.39957E-06 0.010936133 0.032808399 0.393700787 100000000
1 mm 0.000001 0.001 0.1 1 6.21371E-07 5.39957E-07 0.001093613 0.00328084 0.039370079 10000000
1 mi 1.609344 1609.344 160934.4 1609344 1 0.868976242 1760 5280 63360 1.60934E+13
1 NM 1.852 1852 185200 1852000 1.150779448 1 2025.371829 6076.115486 72913.38583 1.852E+13
1 yd 0.0009144 0.9144 91.44 914.4 0.000568182 0.000493737 1 3 36 9144000000
1 ft 0.0003048 0.3048 30.48 304.8 0.000189394 0.000164579 0.333333333 1 12 3048000000
1 in 0.0000254 0.0254 2.54 25.4 1.57828E-05 0.027777778 0.027777778 254000000 1 254000000
1 A 1E-13 1E-10 0.00000001 0.0000001 0.0000001 5.39957E-14 5.39957E-14 3.28084E-10 3.93701E-09 1

How to use the length calculator?

To perform a length conversion, walk through the steps below:

  1. Enter the source value into the box at the top left.
  2. Select the unit of the source.
  3. Select the unit of the target.
  4. The length conversion is automatically performed and the result is displayed at the right-hand side.

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