Fuel Cost Calculator
Calculate total trip fuel cost from distance, fuel efficiency, and fuel price
About this calculator
The Fuel Cost Calculator estimates how much you'll spend on gas for any trip based on distance, fuel efficiency, and the current price per liter or gallon. It works in km or miles and supports mpg, km/L, and L/100km efficiency formats. Great for road-trip budgeting, comparing vehicles, or tracking monthly driving costs.
How to use the Fuel Cost Calculator calculator
- Enter your values into the input fields.
- Read the result — it updates instantly as you type.
- Adjust the inputs to compare scenarios.
- Copy the page URL to share the exact calculation.
Common examples
- 500 km, 10 L/100km, $1.80/L → 50 L used, total cost $90.00
- 300 miles, 30 mpg, $3.50/gal → 10 gal used, total cost $35.00
- 1 200 km, 8 L/100km, $1.95/L → 96 L used, total cost $187.20
- 150 miles, 40 mpg, $4.00/gal → 3.75 gal used, total cost $15.00
- 800 km, 12 L/100km, $2.10/L → 96 L used, $201.60 total ($0.252/km)
Frequently asked questions
How does the Fuel Cost Calculator calculator work?
Enter your numbers and the calculator applies the standard formula for this everyday task, showing the result and how it was reached. It handles the unit and rounding details so you do not have to.
When would I use the Fuel Cost Calculator calculator?
Whenever this comes up in daily life — planning, shopping, home projects, travel or work — and you want a quick, dependable answer instead of estimating or working it out by hand.
How accurate are the results?
The math runs at full precision internally and only the displayed value is rounded for readability. For real-world use the practical limit is the accuracy of the numbers you enter, not the calculation.
Can I share a specific calculation with someone else?
Yes. Every value you enter updates the URL, so copying the address bar and sharing the link reopens the exact same calculation for whoever clicks it.