As of Version 9.0, unit functionality is built into the Wolfram Language

is a unit of length.


  • To use XUnit, you first need to load the Units Package using Needs["Units`"].
  • XUnit is equivalent to approximately 1.002×10-13 Meter (SI units).
  • Convert[n XUnit,newunits] converts n XUnit to a form involving units newunits.
  • XUnit is typically abbreviated xu.
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