Gas Mileage Calculator
Calculate fuel economy from miles driven and gallons used.
Miles per gallon
32 mpg
Liters per 100 km
7.35 L/100 km
Formula
MPG = miles driven / gallons used.
The gas mileage calculator estimates miles per gallon and liters per 100 km from trip fuel use.
How to Use
The gas mileage calculator estimates miles per gallon and liters per 100 km from trip fuel use. Enter the Miles driven and Gallons used values and review the Miles per gallon and Liters per 100 km outputs after you calculate.
- Open the calculator : Start with Gas Mileage Calculator.
- Enter values : Fill in the required inputs and any optional settings.
- Review the result : Read the output and use the about page for more detail if needed.
Common Questions
What formula does the Gas Mileage Calculator use?
MPG = miles driven / gallons used.
How do you calculate MPG manually?
To calculate your exact miles per gallon (MPG), divide the exact number of miles driven since your last fill-up by the number of gallons it took to refill your tank. For the most accurate reading, always reset your trip odometer while parked at the gas pump.