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

is a unit of length.


  • To use AstronomicalUnit, you first need to load the Units Package using Needs["Units`"].
  • AstronomicalUnit is equivalent to approximately 1.49598*^11 Meter (SI units).
  • Convert[n AstronomicalUnit,newunits] converts n AstronomicalUnit to a form involving units newunits.
  • AstronomicalUnit is typically abbreviated as AU or a.u.