Car MPG Calculator


This calculator will compute your car's Miles Per Gallon and forecast your gasoline expense for one month and for one year. It also allows you to see how much money you would save if you were driving a car that got better gas mileage.

Once you have calculated your Current MPG you can change the Comparison MPG and the calculator will instantly recalculate the savings (click on the MPG selection box and use the down-arrow on your keyboard to quickly scroll to higher MPG comparisons).

Recent Fuel & Driving Info

Beginning odometer reading:
Ending odometer reading:
Gallons of fuel pumped this fill:
Local cost of a gallon of gas:

Average Fuel Usage

Average miles driven per :
Driving days per week:
Driving weeks per year:


Current MPG

Comparison MPG

Miles per Gallon:
Gas expense per day:
Gas expense per month:
Gas expense per year:

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