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Road Trip Cost Calculator
Estimate the fuel cost of a road trip and split it between passengers.
Trip distance
Fuel economy
Fuel price
People sharing cost
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How it works
Fuel cost = (distance ÷ mpg) × fuel price; per person = cost ÷ people
Trip fuel is distance divided by fuel economy to get gallons, times the price per gallon. Splitting between passengers gives a fair share for carpooling.
Worked example
600 miles at 32 mpg and $3.50/gal is about 18.75 gal, or $65.63 — $32.81 each for two.
Frequently asked questions
Should I use city or highway mpg?
Use highway mpg for long trips, or a blend if your route mixes both. Loaded cars and roof boxes lower it.
Does this include tolls?
No — add tolls and parking separately for the full trip cost.
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This calculator is for educational purposes. Double-check important results before acting on them.