Haversine Road Trip Fuel Stop Planner
Enter your trip distance, vehicle efficiency, and tank size to estimate total fuel cost and how many times you'll need to stop and refuel.
Total Fuel Cost
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Total Gallons Needed—
Estimated Fill-Ups—
Cost Per Person—
Usable Range Per Tank (miles)—
About this calculator
Calculate total fuel cost and number of fill-ups needed for a multi-leg road trip based on distance, MPG, tank size, and gas price.
Frequently Asked Questions
Why include a reserve buffer?
Most drivers refuel before hitting empty. The buffer reduces your usable range per tank to reflect realistic refueling habits, giving a more accurate fill-up count.
Does this account for highway vs city driving?
No, it uses a single average MPG value. For more accuracy, use a blended MPG figure based on your expected mix of highway and city driving.
Can I use this for multi-driver trips?
Yes, enter the number of people splitting costs to see the per-person fuel expense in the breakdown.