In terms of Imperial weights and measures, Jet A-1 type gasoline weighs 0.15 pounds and has a volume of 0.15 gallons. As a result, 6.66 pounds equals one gallon of Jet A-1 type fuel when multiplied by 0.15.
The most popular kind of jet fuel for use in commercial and civil aviation is jet A-1 fuel. In order to make flight load calculations simpler, it is marketed by the pound rather than the gallon.
For optimal performance and safety, pilots must always be aware of the precise weight of their aircraft. A pilot would benefit more from knowing how many pounds a full fuel load weighs than how much room it takes up.