This savings on gas calculator will tell you how much money you would save between fillups if you were getting better gas mileage. The calculator calculates miles per gallon and cost per mile and then assumes you can get 2MPG better gas mileage and using this assumption tells you how much money you would save. Studies show just about anybody can get 2MPG better mileage by changing driving habits. Is it worth it? Try this savings on gas calculator and see! This calculator is brought to you by