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Length converter
Convert metric, international customary and nautical lengths.
Numbers
Text
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
This tool needs JavaScript. If it does not load, refresh the page and try again.
How to use this tool
- Enter a value using a decimal point or scientific notation.
- Choose the input and output units. For temperature, choose absolute values or differences.
- Select Convert units, review the result and download the text if useful. Reset restores defaults.
Examples
12 inches = 30.48 centimetres.
Limitations
- Uses floating-point arithmetic with output rounded to 12 significant digits. Maximum input magnitude is 1e100. Nonzero values or results outside the floating-point range are rejected. No network request is needed for calculation.
- Uses the international foot; historical U.S. survey feet are not included.
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