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

is a unit of mass.


  • To use AMU, you first need to load the Units Package using Needs["Units`"].
  • AMU is an abbreviation for AtomicMassUnit.
  • AMU is equivalent to approximately 1.66054*^-27 Kilogram (SI units).
  • Convert[n AMU,newunits] converts n AMU to a form involving units newunits.
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