How Much Does a Gallon of Gas Weight? [Weight Chart]
Gasoline weighs roughly 6 pounds per gallon, but it varies depending on many factors. As a rule of thumb in the US, gasoline density ranges from 5.9 up to 6.5 pounds per gallon. How Much Do 5 Gallons of Gas Weigh? A single gallon of gasoline weighs approximately six pounds, which means that five full gallons of gasoline would weigh 30 pounds.