Fuel Cost Calculator
Estimate the fuel cost of a trip. Enter the distance, your vehicle's fuel efficiency, and the price per gallon (or liter) to get an instant cost estimate.
Recommended Settings
Pro Tips
- •This works with any consistent units - use kilometers, liters, and price per liter instead of miles, gallons, and price per gallon if that matches your region
- •Fuel efficiency (MPG) varies with driving conditions - highway driving typically achieves better MPG than stop-and-go city driving
- •Cost per mile is useful for comparing the fuel economics of different vehicles or for expense reimbursement calculations
- •This estimates fuel cost only - it doesn't include other trip costs like tolls, parking, or vehicle wear and maintenance
Most Popular
Most users estimate cost for a specific road trip using their vehicle's average MPG and current local fuel prices
When to Use This Tool
Estimate how much you'll spend on fuel for an upcoming road trip.
Calculate your daily or monthly fuel costs for a regular commute.
Compare the fuel cost of driving different vehicles with different fuel efficiency ratings.
Estimate fuel costs for mileage-based expense reports or reimbursement requests.
How It Works
Divide the total distance by the vehicle's fuel efficiency to calculate how much fuel is needed
Multiply the fuel needed by the price per unit of fuel to get the total estimated cost
Divide the total cost by the distance to calculate an average cost per mile
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Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by Client-side JavaScript arithmetic for optimal performance on modern browsers.
Open Source
Built with verified, open-source libraries. Fully transparent.
Frequently Asked Questions
Can I use this with metric units?
Yes. Enter your distance in kilometers, fuel efficiency in km per liter (or convert L/100km first), and price per liter - as long as your units are consistent with each other, the calculation works the same way.
Why might my actual fuel cost differ from the estimate?
Real-world fuel efficiency varies based on driving style, terrain, traffic conditions, vehicle load, and weather - the EPA or manufacturer-rated MPG is often an average that doesn't match every driving situation exactly.
Is my data sent to a server?
No. All calculations happen instantly in your browser using JavaScript. Nothing you enter is transmitted anywhere.
Does this include round-trip costs?
Enter the total distance you'll actually drive - if you want round-trip cost, enter double the one-way distance (or the full round-trip mileage) rather than just the distance in one direction.
How can I find my vehicle's fuel efficiency?
Check your vehicle's manual, the manufacturer's published EPA rating, or calculate it yourself by dividing miles driven by gallons used over a few fill-ups for a more personalized, real-world figure.