Trip Fuel Cost Calculator

Calculate the fuel cost for a trip using distance, vehicle MPG, and fuel price. This trip fuel cost calculator also estimates gallons needed, round trip cost, cost per mile, and cost per person.

Calculate Trip Fuel Cost

Trip Fuel Cost = Trip Distance ÷ MPG × Fuel Price. Round Trip Cost uses double the trip distance.
Your result will appear here.

How the trip fuel cost calculator works

One-way trip:
Enter trip distance, MPG, and fuel price to estimate fuel used and fuel cost.

Round trip:
The calculator doubles the trip distance to estimate the total fuel cost for driving there and back.

Split trip cost:
Enter the number of travelers to calculate how much each person would pay if the fuel cost is shared evenly.

Compare with better MPG:
Enter a higher MPG to estimate how much fuel cost could be saved with a more efficient vehicle.

Why use a trip fuel cost calculator?

A trip fuel cost calculator helps estimate road trip costs before you drive. It can be useful for vacations, commuting, delivery routes, moving trips, and shared travel.

It can also help compare vehicles, plan fuel stops, split gas money, and estimate how much a detour may add to your trip.

What your result means

Your result shows trip fuel cost, gallons needed, cost per mile, round trip cost, cost per person, estimated tank range, fuel stops needed, and possible savings with better MPG. These are estimates based on the distance, fuel price, MPG, and trip details you enter.

Trip fuel cost calculator formulas

Frequently asked questions

How do you calculate trip fuel cost?

Divide the trip distance by your vehicle MPG to estimate gallons needed, then multiply by the fuel price per gallon.

How do you calculate round trip fuel cost?

Double the one-way distance, divide by MPG, and multiply by the fuel price per gallon.

How do you split gas cost for a trip?

Divide the total trip fuel cost by the number of people sharing the cost.

Why can actual trip fuel cost be different?

Actual cost can change because of fuel prices, traffic, speed, hills, weather, tire pressure, cargo weight, and how the vehicle is driven.