Fuel calculators

Save and monitor fuel usage with our free calculators

See how economical your car is with our free fuel consumption and car tax calculators.

We have some of the most widely used fuel calculators on the internet in these pages and we are keep to keep improving them so keep the feedback coming in.

MPG calculator UK miles per Gallon – calculate MPG

Our popular MPG Calculator – just enter Mileage and Fuel used since last fill-up: and try the calculator again after using our fuel saving tips (I bet you get another 50 miles out of a tank!).

Use your trip counter and reset when you fill up ensuring that the tank is full then when empty fill up to full again noting the mileage covered.


MPG calculator using km. Kilometers to UK MPG.

Miles per gallon calculator using kilometers covered. "MPG calculated from KM" Press ctrl + D to book mark this MPG Calculator […]


Litres per 100km calculator.

L/100km Calculator. Simply enter Mileage and Fuel used since last fill-up to get your fuel consumption in L/100km – the new European standard measure of a cars economy:Use your trip counter and reset when you fill up ensuring that the tank is full then when empty fill up to full again noting the mileage covered.


Annual fuel cost comparing 2 cars MPG

Now you can see what your annual fuel cost is based on your annual mileage, your MPG and the cost of fuel per litre.

Calculate your annual fuel cost from MPG and compare 2 cars side by side. It is handy if you are buying a newer car and want to see how the annual fuel costs compare.
We don’t take into account the price of inflation on the fuel price so we recommend that you add a bit to the fuel cost so it averages out. For example if the fuel cost is 140pence putting 146 pence should cover you for the hikes during the rest of the year.




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