Energy Conversion Factors

• 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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