British thermal units (Btu)
Why use British thermal units? You can use heat content to equally compare energy sources or fuels. Fuels can be converted from physical units of measure (such as weight or volume) to a common unit
Read MoreHow much btry energy
In physics, energy density is the quotient between the amount of energy stored in a given system or contained in a given region of space and the volume of the system or region considered. It is sometimes confused with stored energy per unit mass, which is called specific.
