BTU Content Comparisons of Common Fuels*

Energy Source Approximate BTU Content
Charcoal 9,000 per pound
Wood, wet 5,500 per pound
Wood, dry 7,000 per pound
Coal 10,000 per pound
Gasoline 17,500 per pound
Propane 15,000 per pound
Fuel Oil 19,500 per pound
Diesel fuel 21,500 per pound
Natural Gas 1000 per cubic foot

* taken from several public utility web sites