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Gas Mileage (MPG) Calculator
Find your real-world fuel economy. Enter the miles you drove and the gallons it took to refill, and get MPG along with metric equivalents.
How to measure MPG
Fill your tank, reset the trip odometer, drive normally, then refill. MPG = miles driven ÷ gallons added. Measuring over a full tank is more accurate than a short trip.
Frequently asked questions
How do I calculate miles per gallon?
Divide the miles driven since your last fill-up by the gallons it took to fill the tank again.
What is good gas mileage?
For a modern car, 30+ MPG on the highway is good; hybrids often reach 45–55 MPG. Trucks and SUVs are typically lower.
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