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Fuel Cost Calculator

Work out the petrol or diesel cost of a journey using distance, UK fuel economy and pump price.

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Fuel used on your journey

Distance divided by fuel economy gives gallons used. We convert UK imperial gallons to litres using 4.54609 litres per gallon, then multiply by your pump price.

Enter the full return distance if needed. This estimates fuel only; servicing, insurance and depreciation are excluded. It is not an HMRC mileage allowance or an electric-vehicle charging calculator.

Calculations run in your browser. Your entries are not stored or sent to us.