As of version 9.0, unit functionality is built into Mathematica

is a unit of energy.


  • To use , you first need to load the Units Package using Needs["Units`"].
  • is equivalent to approximately 1055.06 Joule (SI units).
  • is equivalent to BTU.
  • Convert[n BritishThermalUnit, newunits] converts n BritishThermalUnit to a form involving units newunits.
  • is typically abbreviated as Btu.
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