Unit Conversion

Length Converter

Convert everyday and scientific length units in one place—from millimeters and meters to inches, feet, and miles.

Convert a length value

Enter a value, choose the unit you have, and select the unit you want.

Clear

About this converter

How to use Length Converter, plus the formulas and logic behind the results.

Tool description

The Length Converter changes a distance from one unit to another using internationally accepted SI and imperial definitions. It is useful for construction, maps, sports, science, and everyday measurements such as converting meters to feet or miles to kilometers.

How to use

  1. Enter the numeric length you want to convert.
  2. Choose the unit you currently have in the From list.
  3. Choose the unit you want in the To list.
  4. Select Convert to see the result and the same value in every supported unit.

Formulas

  • base meters = input × factor of the source unit
  • output = base meters ÷ factor of the target unit
  • 1 in = 0.0254 m, 1 ft = 0.3048 m, 1 mi = 1,609.344 m, 1 nmi = 1,852 m

Quick reference

  • 1 meter = 100 centimeters
  • 1 meter ≈ 3.28084 feet
  • 1 inch = 2.54 centimeters
  • 1 mile = 1.609344 kilometers

Calculation logic

Every length is first converted into meters, the SI base unit. The meter value is then divided by the target unit’s meter factor. This two-step method keeps conversions consistent and avoids chaining rounded intermediate results.

Conversions use standard SI and imperial definitions. Results may be rounded for display.

Length Converter FAQ

Common questions about this converter and how to use the results.

How do I convert meters to feet?

Multiply meters by 3.28084. For example, 1 m ≈ 3.28084 ft.

How do I convert inches to centimeters?

Multiply inches by 2.54. For example, 12 in = 30.48 cm.

How do I convert miles to kilometers?

Multiply miles by 1.609344. For example, 1 mi ≈ 1.609 km.

What units does this length converter support?

It supports millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, and nautical miles.

Is a nautical mile the same as a mile?

No. A nautical mile is 1,852 meters, while a statute mile is 1,609.344 meters.

Can I convert very small or large lengths?

Yes. The converter works across metric and imperial units, including millimeter and kilometer scales.