UK fuel cost calculator
Calculate journey fuel costs in the UK based on distance in miles, vehicle MPG, pence per litre and passenger cost split.
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Calculated using standard UK Imperial gallons (1 UK gallon = 4.54609 litres).
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About this tool
Calculate the exact fuel cost of driving any trip in the UK. Enter your journey distance in miles, your car’s average fuel consumption in miles per gallon (MPG), and current petrol or diesel prices in pence per litre. Toggle round trips and split expenses fairly across passengers.
How to use it
- 1 Enter your journey distance in miles and check return journey if applicable.
- 2 Enter your vehicle fuel efficiency in MPG (typical UK car averages 40 to 50 MPG).
- 3 Enter the fuel price in pence per litre and number of passengers to split the bill.
Questions
How do I calculate fuel cost for a journey?
Divide journey miles by your vehicle MPG to get gallons, multiply by 4.54609 to get litres, then multiply litres by the fuel price per litre in pounds.
What is a good MPG in the UK?
Petrol cars typically achieve 40–50 MPG on motorways; diesels achieve 50–65 MPG; modern self-charging hybrids can exceed 60 MPG.
Does this calculator use UK Imperial or US gallons?
This calculator uses UK Imperial gallons (1 UK gallon = 4.54609 litres), ensuring accurate figures for British cars.
Is my data uploaded?
No. This tool runs in your browser, so your text and files never reach our server.
Is this tool free?
Yes. It’s free to use with no sign-up and no limits for normal use.
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