Energy Unit Comparison
One of the difficulties of reading articles about energy resources is the plethora of units used. This is an attempt to give a comparison of some commonly quoted energy units. You may enter a number in any of the boxes to calculate the comparisons in other units.
The energy values for the common fuels are nominal values since the energy content of these fuels varies with the source.
The SI unit for energy is the Joule = newton x meter, the work done by exerting a newton of force through 1 meter of distance. In the CGS system, the energy unit is the erg = dyne x cm, the work done by exerting one dyne of force through 1 cm of distance. The Joule = 107 ergs.