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Convert between meters, kilometers, feet, inches and miles.
How to use: enter a numeric value, choose the source and target units, then click Convert. Precision defaults to 6 decimals.
Standards: metric base = meters (m). Imperial conversions use exact international definitions (e.g., 1 in = 0.0254 m).
Tip: For navigation distances, consider nautical miles (nmi). Use higher precision for very large or very small values.
History: The metre has been the SI base unit of length since 1960 and defined via the speed of light since 1983.