Find Make and Model

MPG Calculator

Journey Calculator

Calculate the Cost of a Car Journey

Use our simple Journey Cost Calculator to calculate the price of a journey that you have or will potentially make. All that you need is the number of miles covered, the current cost of Petrol, Diesel or LPG and your cars miles per gallon (MPG). If you do not know the MPG of your car then find it using our "Car MPG Finder".

Journey Price Calculator


What is the Formula to Calculate Car Journey Cost?

Unlike other websites, we want to educate and provide you with the formula step by step so that you can do it yourself.

Firstly, calculate how many miles to the litre, which must be converted into US Gallons by dividing the cars MPG by 4.54609188.

i.e. Miles Per Litre = 40 MPG ÷ 4.54609188

After, we multiply the miles covered by the cost of fuel and then divide by the miles per litre. We then divide the result again by 100.

((Miles Covered x Cost of Fuel) ÷ Miles Per Litre) ÷ 100