Heat Content of Common Fuels

 

Fuel

Quantity

BTU

Electricity KWH 3,412
Natural Gas Therm 100,000
Natural Gas (varies depending on gas composition) CCF 91,000
Propane gal 93,000
Fuel Oil gal 142,000
Wood - air dryed -- variable depending on moisture content and spicies lb 8,000
Pellets lb 8,250
Coal lb 14,000
     

 

More on this at: http://www.eere.energy.gov/consumerinfo/factsheets/cb5.html