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Client-side ProcessingUpdated 2026-02-11Report issue

Runs fully in your browser. Inputs stay on your device. See recent fixes on changelog.

Fuel Cost Calculator

Calculate trip fuel cost from distance and fuel efficiency.

FreeRuns in browserfuel cost calculatorgas cost calculator
km
L/100km
$/L
Cmd/Ctrl+Enter Primary actionCmd/Ctrl+Shift+L Load sampleCmd/Ctrl+Shift+X Clear/resetCmd/Ctrl+Shift+C Copy result

About Fuel Cost Calculator

Calculate trip fuel cost from distance and fuel efficiency. Calculate fuel cost for any trip online for free. Enter distance, fuel efficiency in L/100km, and fuel price per liter to get total liters needed and trip cost. Uses precise mathematical formulas with clear, formatted results. Input validation prevents errors and guides correct usage, ensuring reliable computations every time. Everything runs client-side in your browser for maximum speed and privacy — no data is sent to any server, and no signup is required.

Related tools: Electricity Cost Calculator, MPG to L/100km Converter, Percentage Calculator

How to Use Fuel Cost Calculator

  1. Fill in the required input fields with your values.
  2. Click Calculate to run the computation.
  3. View the results below the form.

Frequently Asked Questions

What is Fuel Cost Calculator?
Calculate fuel cost for any trip online for free. Enter distance, fuel efficiency in L/100km, and fuel price per liter to get total liters needed and trip cost.
How are calculations performed?
Calculations use precise mathematical formulas implemented in JavaScript. The underlying formulas are well-documented and validated against known reference values to ensure correctness.
Can I use decimal values?
Yes, all input fields accept decimal numbers with full floating-point precision. You can enter values with as many decimal places as you need and the tool will compute accurate results.
Are the formulas used shown?
Where applicable, the tool displays the formula or methodology used so you can verify the computation yourself. This transparency helps you understand and trust the results.
Is Fuel Cost Calculator free to use?
Yes, this calculator is completely free to use. No account or signup is needed, and all computations run locally in your browser without any restrictions.
Is my data safe when using Fuel Cost Calculator?
Absolutely. Every calculation runs locally in your browser. No input data is transmitted to any server, ensuring your numbers stay private.

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MPG to L/100km Converter
Convert miles per gallon to liters per 100 km.
Percentage Calculator
Calculate percentages, percentage of a number, and increases.