The petrol calculator below will help you to quickly and accurately work out the cost of petrol for your one-way or return trip anywhere in the UK.

Just input a few basic details into the petrol cost calculator and you’ll get an estimated petrol cost and fuel consumption calculation for your journey.

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Petrol Needed (Litres)

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Petrol Cost (Estimated)

You’ll need to know, or work out your vehicle’s MPG figure to get the most accurate petrol cost calculation for your journey.

How to use our Petrol Calculator

Our petrol calculator is super-easy to use. All you need to do is enter these details into the calculator:

I need to drive: Enter the distance you need to drive in this box. For example, if you need to drive 100 miles, just enter figure 100.

Miles or Kilometres: Choose the measurement you require. The calculator is set to miles by default. It’s very important that you choose the correct measurement because this will affect the calculations for the price and the quantity of fuel required.

My car’s MPG: Enter the MPG of your car into this box. If you don’t know your car’s real MPG, you can use our MPG calculator to work this out.

Petrol price (Pence): Enter the price you’re paying per litre of petrol, in pence. For example, 172 or 175.

Round trip required: Choose whether or not you would like the petrol calculator to include a return cost. If you choose yes, this will double the price and fuel quantity automatically.

Other Petrol Calculators


Use this calculator to work out how many miles you can get from £5 petrol in 2023 based on your MPG!


Use this calculator to work out how many miles you can get from £10 petrol in 2023 based on your MPG!


Use this calculator to work out how many miles you can get from £15 petrol in 2023 based on your MPG!


Use this calculator to work out how many miles you can get from £20 petrol in 2023 based on your MPG!


Use this calculator to work out how many miles you are currently getting per litre of petrol.


Use this calculator to work out how much petrol you would need to drive 100 miles in the UK.

Tools and Converters


Use this tool to convert miles per gallon to miles per litre and vice versa. MPG to MPL converter UK!


Use this tool to convert miles per gallon to litres per 100km and vice versa. MPG to l/100km converter!


Use this tool to convert US miles per gallon to UK miles per gallon. US MPG to UK MPG.


Use this tool to convert litres to gallons UK and gallons to litres.


Use this tool to convert miles per gallon to kilometres per litre. MPG to km/l converter!


Use this tool to convert miles per gallon to kilometres per gallon. MPG to KPG.

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