This simple calculator shows the relationship between number of automobiles and number of gallons of gasoline purchased per year, and amount of fuel available for evaporation. The fuel available for evaporation is reported in units of grams of VOCs (volatile organic compounds) as well as VOCs in metric tons.
Use this calculator to investigate the effect of more cars and/or more gas consumption per year. The default values represent about 0.01% of the annual VOCs emissions per year.