Work out exactly how much a journey will cost in fuel. Enter the distance, your vehicle’s fuel efficiency and the current fuel price to estimate the fuel needed and the total cost — free, instant and private, with no sign-up needed.
How to Use
- Enter the total distance of your journey and choose miles or kilometres.
- Add your vehicle’s fuel efficiency in mpg (UK) or litres per 100 km.
- Enter the current fuel price per litre or per UK gallon.
- Click Calculate Fuel Cost to see the fuel needed and the estimated total cost.
Key Features
- Instant estimate — the fuel needed and trip cost, calculated on the spot.
- Metric and imperial — works with miles or kilometres, mpg or L/100 km, litres or gallons.
- UK gallon conversion — uses the UK gallon of 4.54609 litres for accurate results.
- Price flexibility — enter fuel prices per litre or per UK gallon.
- 100% private — everything is calculated in your browser; nothing is sent anywhere.
FAQs
Is this fuel cost calculator free?
Yes. It is completely free with no sign-up and no limits on how many calculations you run.
How is the fuel cost calculated?
It converts your distance and efficiency into litres of fuel needed, then multiplies by the fuel price. For mpg figures it uses the UK gallon of 4.54609 litres.
Does it use UK or US gallons?
UK gallons. The calculator uses 4.54609 litres per gallon, the standard UK gallon.
Is my data stored anywhere?
No. The calculation runs entirely in your browser with JavaScript and nothing is transmitted or saved.