Length Converter

Convert length instantly between millimeters, meters, kilometers, inches, feet, yards, miles, nautical miles, and more with precise standard factors.

Convert instantly

Enter a value and choose the units. Your answer updates as you type.

Value

From

Result

0.1 Centimeter (cm)

Quick reference

Millimeter (mm)0.001 base units
Centimeter (cm)0.01 base units
Meter (m)1 base units
Kilometer (km)1000 base units
Inch (in)0.0254 base units
Foot (ft)0.3048 base units
Yard (yd)0.9144 base units

About the Length Converter

Length conversion is useful whenever a measurement crosses a unit system: building plans may mix millimeters and inches, travel distances use miles or kilometers, and science commonly uses meters. This converter uses the internationally defined inch of exactly 0.0254 meters and the international nautical mile of exactly 1,852 meters, so repeated conversions do not depend on rounded display values.

Enter a value, choose the source and target units, and the result updates immediately: for example, 1 mile becomes 1,609.344 meters. For related measurements, try the dedicated Area Converter for square units or the Speed Converter for distance-per-time calculations.

Frequently asked questions

How many feet are in a meter?

One meter equals approximately 3.280839895 feet; the displayed decimal is rounded from the exact reciprocal of 0.3048.

What is a nautical mile?

An international nautical mile is exactly 1,852 meters and is used in marine and aviation navigation.

Are miles and kilometers converted exactly?

Yes. One international mile is exactly 1,609.344 meters, while one kilometer is exactly 1,000 meters.

Take this calculation further

Browse the converters calculators collection for more tools in this subject.

For a related calculation, use Area Converter to convert square metric and imperial units, including square meters, hectares, acres, square feet, square miles, and square kilometers. Alternatively, use Energy Converter to convert energy accurately between joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours, and BTU.

For the underlying method, read Length Conversion Without Guesswork: Metric, Imperial, and Precision or The Metric vs. Imperial System: A Practical Guide.