FREE TOOL
Fuel Cost Calculator
Calculate the fuel cost for any trip based on distance, fuel efficiency, and gas price.
Fuel Needed
3.33 gal
Total Cost
$11.67
Efficiency Comparison
Why Use Our Fuel Cost Calculator?
Miles or Kilometers
Toggle between US customary units (miles, MPG, gallons) and metric units (km, L/100km, liters) with one click.
Fuel Needed Display
Shows how many gallons or liters your trip requires alongside the total cost so you can plan fill-ups.
Three Efficiency Scenarios
Automatically compares fuel cost at three different efficiency ratings so you can see the savings from a more efficient vehicle.
Any Currency
Enter your local fuel price per gallon or liter and results are in the same currency - no conversion needed.
Road Trip Planning
Great for estimating costs before a long drive. Enter one-way distance and multiply the result to get the round-trip total.
100% Private
All calculation happens in your browser. No data is sent to any server.
Frequently Asked Questions
How do I calculate the fuel cost for a road trip?
Enter the total distance, your vehicle's fuel efficiency, and the current fuel price. The calculator shows fuel needed and total cost instantly.
What is MPG?
MPG stands for miles per gallon - the number of miles your vehicle travels on one gallon of fuel. Higher MPG means better efficiency and lower fuel costs.
How does the metric version work?
Toggle to metric mode and enter distance in kilometers and efficiency in liters per 100km. The result shows liters needed and total cost.
How do I find my car's fuel efficiency?
Check your vehicle's window sticker, owner's manual, or the manufacturer's website. Many modern cars also display real-time or average fuel economy in the dashboard.
Can I use this for one-way vs round-trip?
Yes. For a round trip, simply double the distance before entering it, or run the calculation twice and multiply the result by two.
Is the fuel cost calculator free?
Yes. Completely free with no sign-up required.
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