Fuel Cost Calculator
Calculate the fuel needed and total cost for a trip based on distance, fuel efficiency, and gas price.
Fuel Cost Calculator
Calculate the fuel needed and total cost for a trip based on distance, fuel efficiency, and gas price.
Real-World Examples
350 miles at 28 MPG and $3.65/gal
12.50 gallons, $45.63
40 miles at 32 MPG and $3.80/gal
1.25 gallons, $4.75
2,800 miles at 25 MPG and $3.50/gal
112 gallons, $392.00
Common Mistakes to Avoid
Using kilometers instead of miles with MPG
Fix: MPG (miles per gallon) is a US unit. If your distance is in kilometers, convert it to miles first (1 km ≈ 0.621 miles) or use a liters-per-100km based calculation.
Entering a very low MPG that overstates fuel use
Fix: Real-world MPG varies with driving conditions. Use your vehicle's actual average MPG from the dashboard, not the advertised highway figure, for a realistic estimate.
Forgetting that gas prices vary along the route
Fix: Gas prices can differ significantly between regions. For long trips, use an average price or budget slightly above the cheapest price you expect to find.