Length Converter
Convert between mm, cm, m, km, inches, feet, yards, and miles. Type any value and all other fields update instantly — the fastest free online length converter.
How to use
- Type your measurement into any unit field — millimetre, centimetre, metre, kilometre, inch, foot, yard, or mile.
- All other fields update instantly with the equivalent values.
- Click "Clear all" to reset and start a new conversion.
Related converters
- Weight Converter — convert kg, lb, oz, stones, and more
- Percentage Calculator — compute ratios and percentage changes
- BMI Calculator — uses height in cm or ft/in
Common length conversions
- Centimeters to Inches — convert cm to in with all other units
- Meters to Feet — convert m to ft and in instantly
Frequently Asked Questions
- Is this length converter free?
- Yes, completely free with no account required. All conversions run instantly in your browser.
- How many units does it support?
- The converter supports 8 common length units: millimetre, centimetre, metre, kilometre, inch, foot, yard, and mile. Type any value and all other fields update instantly.
- Does it work on mobile?
- Yes. The tool is mobile-first and works in Safari and Chrome on iOS and Android.
- How many inches are in a centimetre?
- Exactly 0.393701 inches. Equivalently, 1 inch = 2.54 cm exactly. Type 1 in the centimetre field to see all conversions at once.
Last updated: By jarvisbox