Fuel Cost Calculator

Project what you'll spend on gas this year. Enter your annual miles, MPG, and fuel price for a full per-mile and per-month breakdown.

Understanding your fuel costs

Fuel is one of the most controllable parts of car ownership. This calculator divides your annual mileage by your vehicle's fuel economy to find gallons used per year, then multiplies by the price per gallon. The result is broken into yearly, monthly, per-mile, and per-100-mile figures so you can compare vehicles fairly.

The EPA publishes official MPG ratings for nearly every model sold in the U.S., but real-world economy depends heavily on driving style, speed, climate, and maintenance. Use your actual observed MPG for the most accurate estimate.

Frequently asked questions

How do I find my real MPG?

Fill the tank, reset your trip meter, drive normally, then at the next fill-up divide miles driven by gallons added. Average a few tanks for accuracy.

Why is my MPG lower than the sticker?

EPA ratings are lab-tested. Cold weather, short trips, aggressive acceleration, and underinflated tires all lower real-world economy.

Does this work for electric cars?

This tool is built for gasoline. For EVs, compare cost per mile using your electricity rate and the car's miles-per-kWh efficiency.