Road Trip Fuel Cost Calculator
Plan the gas budget for any trip — total fuel cost and the per-person split once you factor in passengers.
Your numbers
Total trip fuel cost
$75
600 mi total
Cost per person
$37.5
2 people
Fuel cost per mile
$0.13
Insight — Splitting fuel across passengers is what makes a road trip cheaper than flying. Tolls, food and lodging aren't included here — add them on top to get the true door-to-door cost.
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For context: a 600-mile round trip at 28 MPG and $3.50/gal works out to about $75 of fuel — roughly $37 each when split between two people. Enter your own distance, MPG and price above.
Good to know
Clear, practical answers about the road trip fuel cost calculator.
How do I calculate fuel cost for a road trip?＋
Multiply trip distance by two if it's a round trip, divide by your MPG to get gallons, then multiply by the price per gallon. Dividing the total by the number of passengers gives each person's share.
Should I use city or highway MPG for a road trip?＋
Highway MPG is usually closer, since most trip miles are at steady speed. But strong headwinds, mountains, a loaded car or roof cargo can drop it noticeably, so estimate slightly conservatively.
Does this include tolls, food and hotels?＋
No — this is fuel only. For a full trip budget, add tolls, parking, meals and lodging to the total fuel cost shown above.
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