Anonymous wrote:CAN ANYONE TELL ME THE FORMULA FOR FIGURING OUT HOW MANY GALLONS OF PROPANE WOULD BE IN A GIVEN (30LB, I.E.) CYLINDER
Propane has a specific gravity of 0.588 grams per cc.
A 20 lb tank would be 9072 grams. dividing that by 0.588 g/cc would give us 15,429 ccs. Converting 15,429 ccs to gallons gives us 4 gallons.