Fuel cost calculator
Work out what a journey will cost in fuel.
About this calculator
Enter the distance, your car's fuel economy and the price of fuel. In UK units that is miles and miles per gallon, which the calculator converts using the imperial gallon of 4.546 litres. Metric users can enter kilometres and litres per 100 km.
Use the figure on your dashboard for the most realistic economy.
Common questions
What is an imperial gallon?
4.546 litres. A US gallon is smaller, at 3.785 litres.
Why is my real cost higher?
Economy figures are often better than real driving, especially in towns or with heavy loads.
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