Gas Mileage Calculator

Calculate your vehicle's fuel efficiency (MPG) and determine exactly how much each mile of driving costs you.

Distance Driven (miles)

From odometer reading or trip meter.

Fuel Used (gallons)

Price per Gallon ($)

How to Track MPG accurately

Most modern cars have an MPG display, but manually calculating it is often more accurate. Here is how to do it at the pump:

Fill your tank completely until the pump clicks off.
Reset your Trip Odometer to zero (or record your current mileage).
Drive as usual until you need gas again.
Fill the tank completely again. Note exactly how many gallons it took to fill up.
Divide the miles on your trip odometer by the gallons you just pumped.