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

is a unit of mass.


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