Road Trip Cost Calculator
Work out the fuel cost of a road trip from distance, fuel economy and fuel price, add tolls and lodging, and split it per traveller. Calculates in your browser.
Total trip cost
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Show the math
Fuel needed comes from the distance and your car's economy, then we multiply by the fuel price and add extras:
cost = (distance ÷ economy) × price + extras
A round trip doubles the distance. Splitting the total between travellers shows each person's share.
Use a unit set that matches your car and pump. Everything is calculated in your browser.
What this does
A road trip cost calculator works out the fuel cost of a drive from distance, fuel economy, and fuel price, adds tolls and lodging, and splits it per traveller.
How to use it
- Enter the trip distance.
- Enter your fuel economy and price.
- Add tolls and lodging.
- Read the cost per traveller.
How it works
Fuel needed is distance over economy; times the price gives the fuel cost, then tolls and lodging are added. The round-trip option doubles the distance.
fuel cost = (distance ÷ economy) × fuel price
Understanding your result
Fuel is the headline, but tolls, lodging, and food along the way often add up to as much again, so budget the whole trip rather than just the tank. The round-trip option doubles the distance, and real economy drops with a heavy load, hills, and high-speed driving, so add a margin rather than trusting the rated mpg on a fully packed car.
Example
600 miles at 30 mpg with $3.50 gas is about $70 of fuel before tolls.
Sources & methodology
Last updated .
Frequently asked questions
How is the fuel cost calculated?
Fuel needed is the distance divided by your fuel economy; multiplying by the fuel price gives the cost, then tolls, food and lodging are added.
Which efficiency units are supported?
Miles per gallon, litres per 100 km, and kilometres per litre, pick the one that matches your car and the labels update automatically.
How does the round-trip option work?
It doubles the distance so the fuel and cost cover driving there and back.
Is my data kept?
No. Everything is computed locally in your browser.
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