How Trip Fuel Cost Calculator Works?
This tool works by dividing the one-way trip distance by your miles per gallon (MPG) and multiplying the gallons by the gas price. The answer is the fuel budget for one journey.
Enter the one-way distance
Type the miles from your start point to your destination, taken from a map app. The default is 180 miles (290 km).
Enter the MPG rating
Use the highway MPG for interstate trips. Highway ratings run 15% to 30% higher than city ratings.
Enter the gas price
Type the expected price along the route. Prices near highways often run $0.10 to $0.30 higher per gallon.
Read the trip cost
The tool returns the fuel cost for one leg. Use the Round-Trip Fuel Cost Calculator for there-and-back trips.
Trip Fuel Cost Calculator Formula
The formula is Trip Cost = (Trip Distance ÷ MPG) × Gas Price.
Trip Cost = (Trip Distance ÷ MPG) × Gas PriceFormula variables
- Trip Distance
- One-way miles from start to destination.
- MPG
- Vehicle fuel economy for the road type on the route.
- Gas Price
- Dollars per US gallon (3.785 L) along the route.
Worked example
- One-Way Distance: 180 miles
- MPG Rating: 29 MPG
- Gas Price: $3.55/gal
- Divide 180 miles by 29 MPG: 180 ÷ 29 = 6.21 gallons (23.5 L).
- Multiply by $3.55: 6.21 × $3.55 = $22.03.
Result: $22.03
Map apps measure road distance, not straight-line distance. Add 5% to the map figure for detours, parking, and wrong turns to keep the budget safe.
Trip Fuel Cost Calculator Conversion Table
The table shows one-way trip fuel costs for 5 distances and 4 MPG ratings at $3.55 per gallon.
Rows: One-Way Distance (miles). Columns: MPG Rating (MPG). Cells: $.
| miles | 18 MPG | 24 MPG | 29 MPG | 36 MPG |
|---|---|---|---|---|
| 50 miles | $9.86 | $7.40 | $6.12 | $4.93 |
| 100 miles | $19.72 | $14.79 | $12.24 | $9.86 |
| 180 miles | $35.50 | $26.63 | $22.03 | $17.75 |
| 300 miles | $59.17 | $44.38 | $36.72 | $29.58 |
| 500 miles | $98.61 | $73.96 | $61.21 | $49.31 |
Values held constant: Gas Price = $3.55/gal.
A 500-mile (805 km) trip costs $98.61 in an 18 MPG SUV and $49.31 in a 36 MPG sedan, half the price for the same distance.
What is Trip Fuel Cost Calculator?
The Trip Fuel Cost Calculator is a tool that estimates the gas cost of a single one-way journey. The tool covers drives across town, between cities, or across a state.
The calculator uses 3 inputs: one-way distance, MPG, and gas price. Each input is easy to find from a map app, the vehicle sticker, and a fuel price app.
One-way pricing suits moves, airport drop-offs, and car deliveries where the return happens by another mode of travel. For trips that return by car, the round-trip version doubles the distance.
What are the uses of Trip Fuel Cost Calculator?
There are 5 main uses of the Trip Fuel Cost Calculator: pricing a city-to-city drive, comparing driving with flying, quoting car delivery jobs, budgeting a move, and planning airport drop-offs.
Pricing a city-to-city drive
Travelers get the fuel cost of a 180-mile drive before booking a hotel.
Comparing driving with flying
Families compare $22 of fuel with airfare and baggage fees for short routes.
Quoting car delivery jobs
Drivers who deliver vehicles one way add fuel cost to the delivery fee.
Budgeting a move
Movers estimate fuel for a rental truck at 10 to 12 MPG across the route.
Planning airport drop-offs
Drivers price the fuel for a one-way airport run when a friend drives the car home.
Need every metric in one place? Open the main MPG Cost Calculator or browse all 101 fuel calculators.