Energy Conversion Factors

Convert between energy units

  • 1 electron volt (eV) = 1.6021 10-19 J
  • 1 erg (erg) = 10-7 J (exact)
  • 1 calorie, thermochemical (cal) = 4.184 J
  • 1 British thermal unit (Btu) = 1055.6 J
  • 1 Q (Q) = 1018 Btu (exact)
  • 1 quad (q) = 1015 Btu (exact)
  • 1 tons oil equivalent (toe) = 4.19 1010 J
  • 1 barrels oil equivalent (bbl) = 5.74 109 J
  • 1 tons coal equivalent (tce) = 2.93 1010 J
  • 1 m3 of natural gas = 3.4 107 J
  • 1 litre of gasoline = 3.2 107 J
  • 1 kilowatthour (kWh) = 3.6 106 J

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