Length Converter
Convert length measurements instantly between millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles.
Conversion Result
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Unit Breakdown
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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.