Length Converter
Convert between mm, cm, m, km, inch, feet, yard and mile.
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How it works
- 1
Enter a length value
Type the number you want to convert.
- 2
Choose the units
Pick the from and to units — mm, cm, m, km, inch, feet, yard or mile.
- 3
Read the result
The converted value updates instantly; use the ⇄ button to flip direction.
FAQ
- How accurate is the conversion?
- It uses exact standard factors (e.g. 1 inch = 2.54 cm exactly), rounded to 6 decimal places.
- Can I convert in the other direction?
- Yes — tap the swap (⇄) button between the two fields to flip the units instantly.
- Does this tool work offline?
- Yes — once the page has loaded, conversion runs entirely in your browser with no network request.