Road trip gas cost calculator
Work out how much gas a road trip will cost and how to split it, including tolls and parking.
Each person pays
- Miles driven
- Gas needed
- Gas cost
- Total with tolls and parking
Estimates only.
How this calculator works
Enter the distance, choose one way or round trip, and add your car's mpg and the price of gas. The calculator works out how many gallons you'll need and what they'll cost, adds any tolls and parking, and splits the total between everyone sharing.
Tips
- Gas prices vary by state, so use an average for your route. Gas price apps can help you plan stops.
- Pack light and skip the roof box if you can; both improve mpg.
- Check your tires before you go; underinflated tires waste gas.
Planning the whole trip? The travel budget calculator adds lodging, food and activities.
Common questions
Use a map app to get the driving distance, and add some extra miles for detours, stops and driving around at your destination.
Usually, yes. Most cars get better mpg on the highway than in town, though high speeds, a loaded car and roof boxes lower it. Use your car's highway rating as a starting point.
Splitting the total evenly between everyone in the car is simplest. Some groups also split tolls and parking, while the driver covers wear on the car.