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Energy Definitions
& Conversion Factors

courtesy Wisconsin Energy Statistics

Average Energy Content of Various Fuels


1 kilowatt-hour of electricity ... 3,413 Btu
1 cubic foot of natural gas ... 1,008 to 1,034 Btu
1 therm of natural gas ... 100,000 Btu
1 gallon of liquefied petroleum gas(LPG) ... 95,475 Btu
1 gallon of crude oil ... 138,095 Btu
1 barrel of crude oil ... 5,800,000 Btu
1 gallon of kerosene or light distillate oil ... 135,000 Btu
1 gallon middle distillate or diesel fuel oil ... 138,690 Btu
1 gallon residential fuel oil ... 149,690 Btu
1 gallon of gasoline ... 125,000 Btu
1 gallon of ethanol ... 84,400 Btu
1 gallon of methanol ... 62,800 Btu
1 gallon gasohol
(10% ethanol, 90% gasoline)
... 120,900 Btu
1 pound of coal ... 8,100-13,000 Btu
1 ton of coal ... 16,200,00-26,000,000 Btu
1 ton of coke ... 26,000,000 Btu
.
1 ton of wood ... 9,000,00-17,000,000 Btu
1 standard cord of wood ... 18,000,000-24,000,000 Btu
1 face cord of wood ... 6,000,000-8,000,000 Btu
.
1 pound low pressure steam
(recoverable heat)
... 1,000 Btu

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© Annie Jones. 2003