Trip Fuel Budget Calculator
Estimate total fuel cost for a road trip.
Enter your values
Enter the trip distance in miles.
Enter the fuel economy in MPG.
Enter the fuel price in $/gal.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Total fuel cost
- $78.61
- Fuel needed
- 22.14 gal
- Cost per 100 miles
- $12.68
- Round trip cost
- $157.21
Quick answer
Trip fuel cost is total distance divided by fuel economy, multiplied by the price per gallon or litre.
cost = (distance / mpg) x price per gallon
At a glance
| What it does | Estimate total fuel cost for a road trip. |
|---|---|
| Category | Travel |
| Inputs needed | Trip distance, Fuel economy, Fuel price |
| Main output | Total fuel cost |
| Formula | cost = (distance / mpg) x price per gallon |
| Cost | Free — no sign-up, no download |
How to use the Trip Fuel Budget Calculator
- 1Enter the one-way trip distance.
- 2Enter your vehicle's fuel economy in MPG.
- 3Enter the local fuel price to get the total budget, plus a round-trip estimate.
Inputs explained
- Trip distance(miles)
- Enter the trip distance in miles.
- Fuel economy(MPG)
- Enter the fuel economy in MPG.
- Fuel price($/gal)
- Enter the fuel price in $/gal.
Worked example
Using the values the calculator loads with:
Inputs
- Trip distance620 miles
- Fuel economy28 MPG
- Fuel price3.55 $/gal
Results
- Total fuel cost$78.61
- Fuel needed22.14 gal
- Cost per 100 miles$12.68
- Round trip cost$157.21
Frequently asked questions
Should I use city or highway MPG?
Use a blended figure close to your real driving mix, or your dashboard's average MPG reading.
Does this include tolls?
No — add toll costs separately using a toll calculator alongside this fuel estimate.
What do I need to enter into the Trip Fuel Budget Calculator?
Just 3 values: trip distance, fuel economy, fuel price. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Trip Fuel Budget Calculator work out the answer?
Trip fuel cost is total distance divided by fuel economy, multiplied by the price per gallon or litre. It applies the formula cost = (distance / mpg) x price per gallon and shows the working so you can check each step by hand.
Is the Trip Fuel Budget Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.