How many btu are in a gallon of propane?
1 gallon of propane = 91,600 BTU’s. A gallon of gasoline is 125,000 BTU’s. BTU is an acronym for British Thermal Unit. The BTU has been in use for hundreds of years and is defined as the amount of heat needed to increase the temperature of one pound of water from 58.5 to 59.5 degrees Fahrenheit. BTU’s are an amount of heat, not energy, because when the term was invented it was thought that heat was an invisible fluid, not a form of energy.
Updated on Wednesday, February 01 2012 at 09:01PM EST