Length Converter

Convert between meters, feet, inches, kilometers, miles, yards and more in an instant. Free, accurate and private — every calculation runs right in your browser.

How to use the length converter

  1. Enter a value. Type the number you want to convert into the Value box.
  2. Pick your units. Choose the unit you are converting from and the unit you want to. Use the ⇄ button to swap them instantly.
  3. Read the result. The converted value appears immediately, and the table below lists the same measurement in every supported length unit.

About this tool

This free length converter handles both metric and imperial units, so you can move between millimeters, centimeters, meters and kilometers or between inches, feet, yards and miles without doing the arithmetic yourself. It also covers nautical miles for navigation and micrometers and nanometers for scientific work, making it useful for students, engineers, travelers, DIY projects and everyday questions like how many centimeters are in an inch.

Every conversion uses exact, internationally defined factors — for example one inch is exactly 2.54 centimeters and one mile is exactly 1,609.344 meters — so the numbers you see are reliable. All of the math happens locally in your browser, which means nothing you type is uploaded or stored and the tool keeps working even when you are offline.

Frequently asked questions

How many feet are in a meter?

One meter equals about 3.28084 feet. To convert meters to feet, multiply by 3.28084; to go from feet to meters, divide by the same number or multiply by 0.3048.

What is the difference between a mile and a nautical mile?

A statute mile is 1,609.344 meters and is used on land, while a nautical mile is 1,852 meters and is used in aviation and at sea because it corresponds to one minute of latitude. This tool supports both.

Are the conversion factors exact?

Yes. The converter uses the internationally agreed definitions — an inch is exactly 2.54 cm, a foot is exactly 0.3048 m, and a yard is exactly 0.9144 m — so results are precise, not rounded approximations.

Is my data sent anywhere?

No. The conversion runs entirely in your browser with JavaScript. Nothing is sent to a server, so your inputs stay completely private.