Fuel Cost Calculator

Calculate fuel costs for any trip. Enter distance, fuel efficiency, and fuel price to get total cost, fuel needed, and cost per km/mile. Supports km/L, MPG, and L/100km.

8.33L

15,000

150.00

241.40

All calculations happen in your browser. No data is sent to any server.

How to Use This Tool

  1. 1

    Enter the distance

    Type the distance you plan to travel in kilometers or miles depending on the efficiency unit selected.

  2. 2

    Set fuel efficiency

    Enter your vehicle fuel efficiency and choose the unit: km/L, MPG (miles per gallon), or L/100km.

  3. 3

    Enter fuel price

    Type the current fuel price per liter or per gallon. The unit changes based on your efficiency selection.

  4. 4

    View results

    See the total fuel needed, total cost, and cost per km/mile. Toggle round trip to double the distance automatically.

Frequently Asked Questions

How is fuel cost calculated?
Fuel cost = (Distance / Fuel Efficiency) x Fuel Price. For L/100km, it is (Distance x L/100km / 100) x Price.
What is the difference between km/L and L/100km?
km/L measures how far you go per liter (higher = better). L/100km measures how much fuel per 100km (lower = better). They are inversely related.
Does this work for electric vehicles?
This calculator is designed for fuel-powered vehicles. For EVs, you would need a different tool that calculates electricity cost per kWh.
Is my data secure?
Yes. All calculations happen entirely in your browser using JavaScript. No data is sent to any server.