Length Unit Conversion





most often used measurement conversion

centimeters to millimeters (cm to mm) converter
1 centimeter (cm) is equal 10 millimeters (mm) use this converter
millimeters to centimeters (mm to cm) converter
1 millimeter (mm) is equal 0.1 centimeter (cm) use this converter
feet to inches (ft to in) converter
1 foot (ft) is equal 12 inches (in) use this converter
inches to feet (in to ft) converter
1 inch (in) is equal 0.083333333333334 foot (ft) use this converter
kilometers to miles (km to mi) converter
1 kilometer (km) is equal 0.62137119223733 mile (mi) use this converter
miles to kilometers (mi to km) converter
1 mile (mi) is equal 1.609344 kilometers (km) use this converter
meters to micrometers (m to µm) converter
1 meter (m) is equal 1000000 micrometers (µm) use this converter
micrometers to meters (µm to m) converter
1 micrometer (µm) is equal 1.0E-6 meter (m) use this converter
microns to nanometers (µ to nm) converter
1 micron (µ) is equal 1000 nanometers (nm) use this converter
nanometers to microns (nm to µ) converter
1 nanometer (nm) is equal 0.001 micron (µ) use this converter
yards to feet (yd to ft) converter
1 yard (yd) is equal 3 feet (ft) use this converter
feet to yards (ft to yd) converter
1 foot (ft) is equal 0.33333333333333 yard (yd) use this converter


Length - according to the geometric definition, length is a quantity that describes the longest dimension of an object. In Euclidean space, it’s how far 2 specific points are from each other. The standard SI unit of length is the meter.

accessible units

angstrom, astronomical unit (au), centimeter (cm), chain, decimeter (dm), fathom, foot (ft), furlong, inch (in), kilometer (km), league, light year, meter (m), mile (mi), millimeter (mm), micrometer (µm), micron (µ), nanometer (nm), nautical mile, parsec, rod, yard (yd)

About Length Unit Conversion tool.

This Unit Conversion program uses custom rounding routines to avoid results such as 3.9999999999 instead of 4.  It rounds the result to 13 significant digits instead of rounding to some number of decimal places, therefore producing superior results for very big or very small initial values and conversion factors.  It accepts scientific notation and converts immediately.