How to split gas money for a road trip
The fairest way to split gas is by total fuel used, not by miles each person sat in the car. Calculate total gallons burned, multiply by the average price you paid at the pump, then divide by the number of people sharing the ride. If the driver covered wear and tear or tolls, add a small flat amount on top.
When to use this calculator
Group road trips, festival drives, ski trips, friends carpooling to a wedding, or regular commute carpools. It also works for rideshare drivers who want to know fuel cost per passenger.
All numbers are estimates. Actual fuel use depends on driving style, terrain and weather.