Gas Cost Calculator
Estimate trip fuel cost from distance, MPG or L/100km, and price per litre or gallon. Free fuel cost calculator.
Parameters
Enter the required details below
Ready to Calculate
Enter your parameters and click calculate to see the results here.
How to Use
- Enter Distance.
- Enter Fuel Efficiency (L/100km or MPG).
- Enter Fuel Price per Unit ($).
- Click Calculate to see Fuel Needed, Total Fuel Cost and Cost per Distance Unit.
- Check the result. Use Reset if you want to try different numbers.
About This Calculator
This gas cost calculator (fuel / petrol cost) uses distance, efficiency, and price. Switch between metric (km, L/100km) and US (miles, MPG) so the units match your car and pump.
Metric fuel needed
litres = (km / 100) × L/100km; cost = litres × price
400 km at 6.5 L/100km and €1.80/L → 26 L and €46.80.
Frequently asked questions
How do I calculate fuel cost for a trip?+
Find fuel used from distance and efficiency, then multiply by the price you actually pay. Highway vs city consumption will change the result.
Is Gas Cost Calculator free to use?+
Yes. Gas Cost Calculator is free and does not require an account. The calculation runs in your browser.
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