Fuel Cost Calculator — Free Online Tool
Calculate the total fuel cost for any trip by entering distance, fuel efficiency, and price per liter/gallon. Supports metric and imperial units: km or miles, L/100km, mpg (US), or km/L. Shows total fuel needed, total cost, and cost per kilometer.
100% client-side. No uploads. Your data never leaves your browser.
How to use Fuel Cost Calculator
- Enter the trip distance and select km or miles.
- Enter your vehicle's fuel efficiency and unit (L/100km, mpg, or km/L).
- Enter the fuel price per liter or gallon.
- See total fuel needed and cost.
Frequently Asked Questions
What is L/100km?
Liters per 100 kilometers — the metric efficiency standard used in most countries. Lower = more efficient.
How do I convert mpg to L/100km?
L/100km = 282.48 ÷ mpg. A 30 mpg car uses about 7.8 L/100km.
Does this account for city vs highway driving?
No — use your real-world average fuel efficiency for accurate results. Manufacturers' figures are typically better than real-world.
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