Fuel Cost Calculator

Estimate the fuel cost of a trip.

Distance

Fuel economy (mpg)

Fuel price ($/gal)

Trip fuel cost ($) 35

Fuel used (gal) 10

Formula: gallons = distance ÷ mpg ; cost = gallons × price

Step-by-step with your numbers:

1. Values used:

2. Distance = 300

3. Fuel economy = 30 mpg

4. Fuel price = 3.5 $/gal

6. Trip fuel cost = 35$

7. Fuel used = Distance / Fuel economy = 300 / 30 = 10gal

Did we solve your problem today?

Plan a road trip budget by estimating how much fuel you'll use and what it'll cost.

The math behind it

Fuel used = distance ÷ fuel economy (mpg). Cost = fuel used × price per gallon.

300 mi at 30 mpg, $3.50/gal → 10 gal × 3.50 = $35.

Round trip?

Double the distance for a return journey.