Fuel Cost Calculator UK (MPG & pence per litre)
Find out how much petrol or diesel a journey will cost, using UK miles per gallon and pence per litre.
How it works
UK gallons are 4.546 litres. Litres used = miles ÷ MPG × 4.546. Cost = litres × price per litre.
For electric cars, use the electric option with miles per kWh and your price per kWh.
Frequently asked questions
How do I find my car's MPG?+
Check the trip computer, or fill the tank, reset the trip, and divide miles driven by gallons used at the next fill-up.