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Road Trip Fuel Stops Calculator

How many fuel stops will I need?

Enter the trip distance, your tank size and MPG to estimate how many fuel stops you need.

One Click Answers · Road Trip Fuel Stops Calculator
oneclickanswers.com/road-trip-fuel-stops-calculator · Printed
About this tool & how to use it

What it does

Works out the range of one tank from the tank size, MPG and reserve, and how many fuel stops a trip needs.

How to use it

  1. Enter the trip distance, the tank size in gallons and your MPG.
  2. Enter the reserve you want to keep, in gallons or as a percent of the tank.
  3. Read the number of fuel stops and the range per tank.

The fuel you do not want to go below.

One click answer

Your answer will appear here.

Fill in the form and your answer appears here as you type.

Assumptions

  • Real range changes with speed, hills, load and weather, so this is an estimate.
  • A real stop depends on where the stations are. Keep a reserve you are comfortable with.

Printed from oneclickanswers.com. Results are estimates based on what was entered; see the assumptions above.

How it works

Range = (tank - reserve) x MPG: (15 - 3) x 30 = 360 miles.

A 1,000-mile trip needs 1,000 / 360 = 2.78, so 3 tanks in all. Starting full, that is 2 fuel stops.

Assumptions

  • Real range changes with speed, hills, load and weather, so this is an estimate.
  • A real stop depends on where the stations are. Keep a reserve you are comfortable with.

Example

Input: The starting values already in the form

Result: You would likely need about 2 fuel stops. Each tank gives about 360 miles of range if you keep 3.0 gallons in reserve, and the trip is 1,000 miles.

Questions

How far can I drive on a tank?

The page shows the range for your tank, MPG and reserve. A 15-gallon tank at 30 MPG with a 3-gallon reserve is 360 miles.

Does it start with a full tank?

Yes. The stops are the refuels after that.

Last reviewed 2026-10-04.

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