Gas Trip Calculator
Trip fuel = miles ÷ MPG × price per gallon. Click any i for detail.
Trip
Miles
i
Miles
One-way or round-trip — use the distance you will actually drive. |
|
|---|---|
MPG
i
MPG
Use highway MPG for a mostly highway trip. |
|
Fuel price ($/gal)
i
Price
Average pump price you expect. |
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People splitting
i
People
Divides fuel cost only — lodging and food are separate. |
How to use this calculator
- Enter miles.
- Set MPG and pump price.
- Add passengers if you are splitting fuel.
- Read gallons, total, and per person.
Results explained
Gallons = miles ÷ MPG. Cost = gallons × price. Per person = cost ÷ people. City vs highway, detours, and rooftop cargo are not modeled.
Quick reference: trip fuel
EPA window-sticker MPG is a lab number — real trips vary.
| Item | Detail |
|---|---|
| 320 mi @ 28 mpg | ≈ 11.4 gal |
| At $3.45/gal | ≈ $39.40 |
| Reimbursement | Different page — cents per mile, not pump math |
| EV? | Not this page |
Employer mileage: mileage reimbursement calculator.
How the estimate is built
cost = (miles / mpg) × price; each = cost / people.
Example scenario
320 miles, 28 mpg, $3.45/gal → about $39.40 (11.4 gal).
FAQ
Round trip?
Enter round-trip miles.
Towing?
Lower MPG — this page does not auto-adjust.
Car shipping instead of driving?
See the car shipping cost calculator.