Use this fuel cost calculator to estimate how much a journey will cost based on distance, fuel price and your vehicle’s MPG. This helps drivers quickly calculate petrol or diesel costs for trips in the UK.
You can also calculate the cost per mile using our Fuel Cost Per Mile Calculator UK or compare petrol and electric vehicles with our Electric vs Petrol Cost Calculator UK.
Calculate Your Fuel Cost
Enter your journey details below to estimate the total fuel cost.
Example Fuel Cost Calculation
If petrol costs £1.50 per litre and your car achieves 40 MPG:
- Distance: 100 miles
- Fuel price: £1.50 per litre
- Vehicle efficiency: 40 MPG
The total fuel cost for the journey would be approximately £17.
Longer journeys will increase total fuel costs, while more fuel-efficient vehicles reduce the cost per mile.
How Fuel Cost Is Calculated
Fuel cost is calculated based on the distance travelled, the price of fuel and your vehicle’s fuel efficiency (MPG). Fuel prices in the UK are measured per litre, while vehicle efficiency is measured in miles per gallon.
The calculator converts fuel price into cost per mile and multiplies it by the total distance to estimate the total journey cost.
What Affects Fuel Cost?
- Fuel price per litre
- Vehicle MPG (fuel efficiency)
- Distance travelled
- Driving conditions
- Vehicle type and engine size
Fuel Cost Calculator UK – Frequently Asked Questions
How do I calculate fuel cost for a trip?
Fuel cost is calculated by multiplying the cost per mile by the total distance travelled. This depends on fuel price and your vehicle’s MPG.
What is the average fuel cost per mile in the UK?
Fuel cost per mile in the UK typically ranges between 15p and 25p depending on fuel prices and vehicle efficiency.
Does MPG affect fuel cost?
Yes. Vehicles with higher MPG use less fuel per mile, reducing the total cost of driving.
Related Cost Calculators
Fuel Cost Per Mile Calculator UK
Electric vs Petrol Cost Calculator UK
Commute Cost Calculator UK
Car Cost Calculator UK
EV Charging Cost Calculator UK