About the fuel cost calculator
Plan road trips and commutes by estimating fuel use and cost. Works with miles and MPG or kilometers and liters per 100 km, and can split the cost between riders.
How to use this calculator
- Choose US or metric units.
- Enter distance, fuel economy, and fuel price.
- Choose one way or round trip.
Worked examples
- 300 ÷ 30 = 10 gal
- 10 × $3.50
$35.00.
Measurement guidance
Find your real MPG
Fill the tank, reset the trip meter, drive normally, then divide miles driven by gallons used at the next fill-up.
Frequently asked questions
How do I convert MPG to L/100 km?
L/100 km ≈ 235.2 ÷ MPG.
Does it include tolls?
No — add tolls and parking separately.