The weight of a gallon of gas, like any other liquid, varies depending on the temperature and density of the liquid. In general, gasoline has a density of about 6.073 pounds per gallon (0.729 kilograms per liter) at 60 degrees Fahrenheit (15.6 degrees Celsius).
Therefore, a gallon of gasoline weighs approximately 6.073 pounds (2.76 kilograms) at 60 degrees Fahrenheit. However, the weight will be slightly different at different temperatures or with different blends of gasoline.
It’s also worth noting that while gasoline is commonly sold in gallons in the United States, other countries may use different units of measurement.