Check before acting
- Enter the full route, including the return leg and planned detours.
- Use recent real-world economy for similar traffic, weather and load.
- Check route-specific tolls, parking and current local fuel prices close to departure.
Everyday · Travel
Fuel Cost Calculator
Plan trip fuel, total driving cost, cost per passenger, and the effect of fuel economy in metric or US units.
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Enter your details
Results update instantly as you type.
DECISION GUIDE
How to use this result in a real decision.
What is the trip budget after fuel, route charges and passenger splitting are treated separately? Divide total trip distance by real-world fuel economy, multiply by the local fuel price, then add entered tolls and parking. Passenger count changes the split, not the vehicle's estimated consumption.
WORKED EXAMPLE
A 500 km trip shared by two people
- Inputs
- 500 km, 12 km/L, $1.65 per liter, $20 tolls, $10 parking and two passengers.
- Calculated result
- The trip uses about 41.67 liters and fuel costs $68.75. Total entered trip cost is $98.75, or about $49.38 per person.
- Decision meaning
- Changing only the number of passengers reallocates the same trip total. Use a separate calculation if vehicles or routes differ.
Not included automatically
- Maintenance, tires, depreciation, insurance and financing
- Charging costs for electric travel and fuel used while idling unless reflected in economy
- Tolls, parking or ferry charges that were not entered
How to use it
A useful answer in three steps.
- 01
Enter the full driving distance, including the return journey if needed.
- 02
Use real-world fuel economy rather than the best advertised figure.
- 03
Add tolls and parking to see the actual trip budget.
Core formula
The math behind the result.
Fuel cost = trip distance ÷ fuel economy × fuel priceQuestions
Useful before you decide.
Should I use highway or combined fuel economy?
Use the figure closest to your route. Stop-and-go driving usually consumes more fuel than steady highway travel.
How do I include a round trip?
Enter the total round-trip distance, or double the one-way distance before calculating.
Does passenger count change fuel use?
The calculator uses passenger count only to split the cost. Heavy loads can slightly reduce real fuel economy.