Length Converter
Convert between mm, cm, m, km, inches, feet, yards and miles.
Enter values
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Step by step
The formula
result = value × (factorₓ / factorᵧ)
Every length conversion routes through a base unit — metres here. Your value is multiplied by its factor to reach metres, then divided by the target's factor. That two-step design means any unit converts to any other without needing a table of every possible pair.
All calculations run locally in your browser and update instantly as you type.
Example calculations
Common questions this calculator answers — select one to load its values.
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Frequently asked questions
How many feet in a metre?+
One metre equals 3.28084 feet.
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