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Length Converter

Number of decimal places in the result (0-15).

About this tool

Convert between metric and imperial length units - millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles - instantly and for free, no sign-up required.

How to use it

  1. Enter the value you want to convert.
  2. Choose the unit you're converting from and the unit you're converting to.
  3. The converted value updates immediately - no need to click a separate submit button for most unit pairs.

Frequently asked questions

How accurate are the conversions?
Conversions use standard, internationally defined unit ratios (e.g. exactly 25.4mm per inch), so results are precise to the decimal places shown.
Can I convert very large or very small numbers?
Yes - the converter handles a wide range of magnitudes without losing precision.