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angstrom astronomical unit (au) centimeter (cm) chain decimeter (dm) fathom foot (ft) furlong inch (in) kilometer (km) league light year meter (m) mile (mi) millimeter (mm) micron (µ) nanometer (nm) nautical mile parsec rod yard (yd)
This Length Conversion program uses custom rounding routines to avoid results such as 3.9999999999 instead of 4. It rounds the result to 13 significant digits instead of rounding to some number of decimal places, therefore producing superior results for very big or very small initial values and conversion factors. It accepts scientific notation and converts immediately.
