Journey fuel cost calculator (UK)
Calculate the fuel cost of any driving trip in the UK. Enter miles, vehicle MPG and petrol/diesel price per litre to split travel costs.
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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 petrol or diesel cost for any UK car journey. Work out total litres used, overall fuel expense, and cost per passenger with UK imperial gallon math.
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 driving fuel cost for a road trip?
Enter total miles driven, your vehicle average MPG, and local pump price per litre. The tool calculates exact litres required and total journey cost.
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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