Free trip calculator
Road trip cost calculator
Work out what a drive will cost in fuel, tolls and parking, then split it fairly between everyone in the car. Kilometres or miles, any fuel economy unit, any currency.
Worth booking before you go
Independent picks. We earn a small commission if you buy through these - at no extra cost to you. How this works.
Road trip cost questions
How do I convert mpg to L/100 km?
Divide 235.2 by your US mpg, or 282.5 by your UK mpg, to get litres per 100 km. For example 30 US mpg is about 7.8 L/100 km. Pick your unit in the calculator and it converts for you.
Is a US gallon the same as a UK gallon?
No. A US gallon is 3.785 litres and an imperial (UK) gallon is 4.546 litres, roughly 20 percent bigger. That is why the same car shows a higher mpg figure in UK units than in US units. Choose the right gallon for both your fuel economy and your fuel price.
How accurate is the estimate?
It multiplies the distance by your car's consumption and the pump price, so it is only as good as those inputs. Real consumption rises with motorway speed, heavy luggage, roof boxes, air conditioning, hills and cold weather, and brochure figures are often optimistic. If your number comes from a spec sheet, leave yourself a margin.
Should I include tolls and parking?
Yes, if you know them. Enter the total for the whole trip, including both directions when round trip is switched on. Check the official toll operator for exact prices, as they change and vary by vehicle type.