About Fuel Efficiency Calculator

Fuel Efficiency Calculator is a free tool for drivers who want to know how much fuel their car really uses and what their trips cost. It works in miles or kilometers, US or UK gallons or liters, and US dollars, euros, Australian dollars or British pounds.

You can use it two ways:

• Fuel efficiency: enter how far you drove and how much fuel you used to get your MPG, km/L or L/100km.
• Trip cost: enter a distance, your car's fuel efficiency and the fuel price to see what the trip will cost.

All calculations run in your browser. Nothing you type into the calculator is sent to us. Results are estimates, and real fuel use depends on your car, the road, the weather and how you drive.

Have a question or found a mistake? Get in touch.