INTERACTIVE TOOL
Length converter
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How to use this tool
- Enter a length.
- Choose source and destination units.
- Use swap to inspect the reverse conversion.
Formula or method usedEach unit is converted to meters first and then to the target unit.
Worked example
One metre equals one hundred centimetres and one thousand millimetres.
Assumptions and limits
Area and volume require squared or cubed conversion factors.
Frequently asked questions
Can I swap the units?+
Yes. The swap button reverses source and target without losing the value.
What happens to my inputs?+
Calculation inputs are processed locally in your browser. Favorites and preferences may be saved on this device. The site may perform separate network requests for live panels; these do not include the values entered into this local calculator. Do not paste secrets into public tools.
How should I check the result?+
Area and volume require squared or cubed conversion factors.