Road Trip Gas Cost Calculator
Total fuel cost for a road trip.
Enter your values
ⓘ Live results
Results
- Total gas cost
- $96.00
- Gallons needed
- 26.7 gal
- Cost per person
- $96.00
Quick answer
Total gas cost is trip distance divided by your car's MPG, times the price per gallon.
cost = (distance / mpg) x gas price
How to use the Road Trip Gas Cost Calculator
- 1Enter the total round-trip distance in miles.
- 2Enter your vehicle's average MPG and current gas price along the route.
- 3Split the total among travelers to see the cost per person.
Worked example
Using the values the calculator loads with:
Inputs
- Trip distance (round trip)800 mi
- Vehicle MPG30
- Gas price per gallon3.60
- Number of people splitting cost1
Results
- Total gas cost$96.00
- Gallons needed26.7 gal
- Cost per person$96.00
Frequently asked questions
Should I account for highway vs city MPG?
Yes, use your car's highway MPG rating for long road trips since most driving will be at steady highway speed.
Does this include tolls?
No, this covers fuel only — add tolls, food and lodging separately for a full trip budget.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.