Estimate your trip fuel costs for any journey using distance, fuel efficiency and fuel prices. Choose your units and enter values below.
✔ Calculate trip fuel costs • ✔ MPG & L/100 km • ✔ Miles & kilometres • ✔ Instant results
Our Fuel Cost Calculator UK estimates how much your journey will cost based on the distance travelled, your vehicle's fuel economy, and the current fuel price. Whether you're driving a petrol car, diesel vehicle, hybrid, motorcycle, van, or SUV, this calculator provides a quick estimate of both fuel consumption and total travel cost.
Simply enter your journey distance, choose miles or kilometres, enter your vehicle's fuel efficiency in either MPG or litres per 100 kilometres (L/100 km), and add the current fuel price per litre. The calculator instantly estimates how many litres of fuel your journey will require and how much it will cost.
The calculator is ideal for daily commuting, business mileage, delivery drivers, holiday planning, budgeting, comparing vehicles, and estimating long-distance travel expenses.
This calculator supports the most common fuel economy measurements used around the world:
All calculations are automatically converted where required, making it easy to compare UK and European fuel economy figures.
The calculator follows these steps:
Fuel Cost = Fuel Used × Price Per Litre
A vehicle that uses less fuel per mile or kilometre will cost less to operate, while longer journeys and higher fuel prices increase overall travel costs.
Estimated fuel used: approximately 20 litres.
Estimated fuel cost: approximately £28.
Estimated fuel used: approximately 45 litres.
Estimated fuel cost: approximately £65.
Estimated fuel used: approximately 10 litres.
Estimated fuel cost: approximately £14.
| Vehicle Type | Typical MPG |
|---|---|
| Small Petrol Car | 50–65 MPG |
| Family Hatchback | 40–55 MPG |
| Large Saloon | 35–50 MPG |
| SUV | 25–40 MPG |
| Van | 25–45 MPG |
| Motorcycle | 60–90 MPG |
Aggressive acceleration, excessive speed, and poor maintenance can significantly increase fuel consumption.
| Fuel Cost | Distance | Cost Per Mile |
|---|---|---|
| £20 | 200 miles | 10p |
| £35 | 250 miles | 14p |
| £50 | 300 miles | 17p |
| £75 | 400 miles | 19p |
Fuel is often one of the largest ongoing vehicle expenses. Understanding fuel costs can help with:
How accurate is this calculator?
The calculator provides an estimate based on the values entered. Actual fuel consumption may vary depending on driving conditions and vehicle performance.
Can I use kilometres instead of miles?
Yes. The calculator supports both miles and kilometres.
Does this work for diesel and petrol vehicles?
Yes. The calculation method is the same regardless of fuel type.
Can I calculate motorcycle fuel costs?
Yes. Simply enter the motorcycle's fuel economy and journey distance.
Why is my real-world fuel economy different from official figures?
Manufacturer figures are measured under controlled conditions. Real-world driving often produces different results depending on traffic, weather, and driving style.
Does this calculator use UK or US MPG?
This calculator uses UK (Imperial) MPG. UK gallons are larger than US gallons, so UK MPG values are higher for the same vehicle.
Can I compare MPG with L/100 km?
Yes. The calculator automatically converts between both measurements, allowing easy comparison of UK and European fuel economy figures.
Can I estimate fuel costs for long road trips?
Yes. Simply enter the total journey distance and your vehicle's average fuel economy to estimate fuel usage and travel cost.
Fuel consumption examples and calculation methods are based on publicly available transport data and commonly accepted fuel economy formulas.
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Last Updated: August 2026