How to calculate fuel cost
A useful fuel estimate combines trip distance, average consumption per 100 km and the current price per litre.
Calculate fuel costUse your distance, consumption and local fuel price.Fuel cost formula
Fuel used equals distance × consumption ÷ 100. Multiply the litres used by the price per litre to get the estimated trip cost.
Worked example
A 500 km trip at 7 L/100 km uses about 35 litres. At 1.80 per litre, the estimated fuel cost is 63.
Check the result before using it
Keep every input in the unit shown by the calculator and compare the result with a second source when it affects a purchase, contract or financial decision. Market prices, tax rates and provider terms may change. The worked example explains the arithmetic, while the linked calculator lets you replace every example value with figures that match your situation.
Fuel cost questions
Why can actual consumption differ?
Traffic, speed, weather, load, tyres and driving style can all change consumption.
How do I calculate cost per passenger?
Divide the total trip cost by the number of people sharing the expense.