Length Converter

Convert length measurements instantly between millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles.

How Length Conversion Works

Length conversion is based on standardized conversion factors. Each unit has a fixed relationship with meters (the base SI unit).

Base Conversion Factors

1 mm = 0.001 m
1 cm = 0.01 m
1 km = 1000 m
1 inch = 0.0254 m
1 foot = 0.3048 m
1 yard = 0.9144 m
1 mile = 1609.344 m
        

Common Use Cases

  • Converting metric to imperial
  • Measuring construction materials
  • Academic and engineering use
  • Travel distance conversions

Frequently Asked Questions

Metric units are decimal-based, making conversions more consistent and simpler.
A meter is slightly longer (1 meter = 1.09361 yards).
Miles are part of the imperial system, still used in the US and UK for road distances.