Fuel cost calculator
Get gallons, price per mile and cost per person from your own numbers.
Open calculator →CALCULATORS / GROUP TRAVEL
Split gas money fairly
Calculate a clear per-person amount for road trips, carpools and shared drives.
Split gas money
FREE · NO ACCOUNTDefault gas price $3.995/gal (EIA Gasoline and Diesel Fuel Update, U.S. regular, week of Nov 9, 2026); other defaults are illustrative. Confirm local fuel and electricity rates before planning.
How the split works
First find fuel cost from miles, MPG and gas price. Add any known tolls, then divide by the number of paying passengers. The calculation assumes everyone splits the total equally.
When equal splitting is not fair
If some passengers join for only part of the route, calculate each segment separately or agree on custom shares. This simple calculator does not track partial journeys or different seat contributions.
Example of a shared trip
240 miles at 30 MPG and $3.995/gal (EIA Gasoline and Diesel Fuel Update, U.S. regular, week of Nov 9, 2026) uses 8 gallons and costs $31.96 in fuel. Add $12 tolls and split by 4 people: $10.99 per person.
Frequently asked questions
Should the driver pay?
That is a group choice. Enter the number of people actually contributing, including the driver if appropriate.
Can we split tolls too?
Yes. Enter the one-way toll amount.
Keep exploring
Build a real road trip budget
Energy is only one cost. Bring everything into one clear plan before you leave.
Open calculator →Calculate a round-trip fuel cost
Turn a one-way distance into the energy cost of leaving and coming back.
Open calculator →