Fuel Mileage Calculator

Calculate fuel mileage with this online calculator.

Total Mileage:

Gallons of Fuel Used:

Fill in the amount of miles driven between fill-ups in the top box. Enter the amount of gallons of fuel used in the second box.

How do you calculate fuel mileage?

Instructions: Fill up your fuel tank, record the amount of miles you drive till your next fuel stop and record how many gallons it takes to refill your fuel tank. Take the amount of miles driven and divide by the amount of fuel it took to refill your tank.

Miles/Gallon (MPG) = Total Mileage Driven / Gallons of Fuel

If you drive 300 miles and you fill up with 15 gallons of fuel, your MPG would be...

Answer: 20 MPG

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