Length & Distance Converter
Convert between all length, distance, and dimensional units with comprehensive results
Input Value
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Common Unit Sets
Understanding Length & Distance Units
Length and distance are fundamental measurements of spatial dimension. The SI base unit of length is the meter (m).
This converter handles a comprehensive set of units from various systems and applications:
Meter (m), centimeter (cm), millimeter (mm), kilometer (km), etc. – based on powers of 10 and used worldwide in science and commerce.
Foot (ft), inch (in), yard (yd), mile (mi), etc. – historically used in English-speaking countries, still common in the US and partially in the UK.
Light-year, astronomical unit (AU), parsec, etc. – used for measuring cosmic distances between celestial objects.
Micrometer (μm), nanometer (nm), angstrom (Å), etc. – used in microscopy, nanotechnology, and atomic-scale measurements.
Nautical mile, fathom, cable, etc. – used in maritime navigation and oceanography.
Cubit, league, rod, etc. – traditional units from various cultures and time periods.
Planck length, atomic unit of length, etc. – used in theoretical physics and quantum mechanics.