Enter the distance
Type the trip length in kilometers or miles; use whichever unit your efficiency uses.
Calculators
Fuel Cost Calculator
Free online fuel cost calculator
Enter the values
Local processingResult
The result will appear here after you run the tool.
Press Ctrl or Command and Enter to run the tool.
About this tool
About this tool
Fuel Cost Calculator converts distance and efficiency into fuel needed and cost. With L/100 km it multiplies distance by efficiency over 100; with mpg or km/L it divides distance by efficiency. The price is interpreted per liter for metric units and per US gallon for mpg, and the total cost is the fuel amount times the price. All math is local.
Budget a road trip or commute before you fill up. Enter the distance, your vehicle fuel efficiency, and the fuel price, and the calculator returns the fuel needed and the total cost. Efficiency can be entered as liters per 100 km, miles per US gallon, or kilometers per liter, with the price unit matching automatically.
Built for daily work
- Estimate the cost of a commute or vacation drive.
- Compare fuel costs between two routes.
- Budget a moving trip across several fuel stops.
- Check whether a more efficient car pays off.
How to use this tool
How to use this tool
Set efficiency and price
Choose L/100 km, mpg, or km/L, enter your vehicle figure, then the fuel price. The price unit hint follows your choice.
Read the estimate
The total trip cost is shown with the fuel needed and the inputs you used.
Key features
Key features
Three efficiency units
Liters per 100 km, miles per US gallon, and kilometers per liter cover metric and imperial habits.
Matching price units
The hint tells you whether the price is per liter or per US gallon for the selected efficiency unit.
Fuel amount included
See exactly how much fuel the trip consumes, useful for planning stops.
Local calculation
Everything runs in your browser with no data sent anywhere.
Practical use cases
Practical use cases
- Estimate the cost of a commute or vacation drive.
- Compare fuel costs between two routes.
- Budget a moving trip across several fuel stops.
- Check whether a more efficient car pays off.
- Plan shared trip costs with friends.
Private by default
For local tools, input is processed in your browser and is not sent to application analytics.
Data processing noticeTechnical details
Technical details
ProcessingLocal browser processing
Efficiency unitsL/100 km, miles per US gallon, km/L
OutputFuel needed and total cost
CurrencyAny symbol as a label
Limitations and important notes
Limitations and important notes
- Real consumption varies with driving conditions.
- mpg uses US gallons; UK figures differ.
- The currency symbol is a label only; no conversion is applied.
Frequently asked questions
Frequently asked questions
The calculator handles the units for you. As a rule of thumb, 235.2 divided by mpg gives L/100 km for US gallons.
US gallons. The UK imperial gallon is about 20 percent larger, so UK mpg figures are not directly comparable.
Real consumption varies with traffic, load, speed, weather, and driving style. The estimate uses your single efficiency number.
It depends on the efficiency unit. The hint below the field tells you which unit the price should use.
Related guides and solutions
Related guides and solutions
What local browser processing means for online tools
A transparent explanation of local tool processing, temporary browser memory, local storage, downloads, analytics boundaries, and cases that require remote services.
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