This fuel cost calculator estimates trip fuel spend from distance, efficiency, and fuel price fields on the page.
To measure vehicle efficiency first, use the gas mileage calculator. For distance checks, open the mileage calculator.
Fuel Cost Calculator
Estimate road trip fuel cost from distance, efficiency, and price.
Fuel Cost Calculator
Formula
cost from distance, economy, and price fieldsApplies the live tool inputs for trip fuel spend.
Frequently Asked Questions
Can I use km and L/100 km?
Convert distance to miles and efficiency to MPG first, or convert carefully. The live fields expect distance with an MPG style efficiency and price per gallon.
Does this include oil changes or tires?
No. It is fuel only.
What if MPG is zero?
The calculator needs a positive efficiency value. Fix the MPG field before trusting a result.
What is the default example cost?
300 miles at 28 MPG and $3.50 per gallon is about $37.50.
How do I budget a round trip?
Double the one way distance, or run the calculator twice and add the results.
How do passengers split the bill?
Divide the fuel cost by the number of people sharing. Keep tolls and food outside this fuel figure.
Should I use brochure MPG?
Prefer real fill up MPG. Brochure numbers are often optimistic for mixed driving.
Does this use live pump prices?
No. Enter the price you expect to pay for your route.