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

is a unit of exposure to X or gamma radiation.


  • To use Rontgen, you first need to load the Units Package using Needs["Units`"].
  • Rontgen is equivalent to approximately 0.000258 Coulomb/Kilogram (SI units).
  • Convert[n Rontgen,newunits] converts n Rontgen to a form involving units newunits.
  • Rontgen is typically abbreviated as R.