Road Trip Fuel Cost Calculator
Calculate the total fuel cost for any road trip based on distance, fuel efficiency, and gas prices.
🚗 Travel📐 Fuel Cost = Distance / MPG × Gas Price
Total trip distance (miles)
Vehicle fuel economy (MPG)
Gas price ($/gallon)
Please enter valid values.
Formula & Reference
| Variable | Formula | Units |
|---|---|---|
| Road Trip Fuel Cost Calculator | Fuel Cost = Distance / MPG × Gas Price | $ total |
Step-by-Step Examples
Example 1
NYC to Miami
1,280 miles, 30 MPG, $3.50/gallon.
- Gallons: 42.7 | Cost: $149.33
✓ $149 fuel cost
Example 2
Cross-Country Drive
2,800 miles, 25 MPG, $3.80/gallon.
- Gallons: 112 | Cost: $425.60
✓ $425 fuel cost
Example 3
Weekend Trip
300 miles, 35 MPG, $3.40/gallon.
- Gallons: 8.6 | Cost: $29.14
✓ $29 fuel cost
Real-World Applications
Road Trippers
Budget fuel costs before any road trip.
Budget Travelers
Decide whether to drive or fly based on real fuel costs.
Trip Planners
Build accurate road trip budgets.
Fleet Managers
Calculate vehicle operating costs.
Common Mistakes to Avoid
⚠️
Not adding fuel buffer
Detours, traffic idling, AC usage, and mountain driving all increase fuel consumption beyond EPA estimates. Add 10% to estimates.
⚠️
Using highway MPG only
EPA combined MPG (city + highway) is more accurate for road trips involving both. Highway-only trips can do better; urban driving does worse.
Frequently Asked Questions
Drive vs fly cost comparison? ▾
Fuel cost alone isn't the full story. Add vehicle wear ($0.10-0.15/mile), parking, tolls, and food for driving. For 2-3 people, driving often wins under 500 miles even before fuel.
Best apps for finding cheap gas? ▾
GasBuddy (best price map), Waze (shows gas stations on route), Google Maps (shows prices). Costco and Walmart gas are typically cheapest in areas where they exist.
EV road trip fuel cost? ▾
EVs use kWh instead of gallons. Calculate: miles / efficiency (miles/kWh) × charging cost ($/kWh). At 4 miles/kWh and $0.30/kWh: 300 miles = 75 kWh = $22.50 vs gas at 30 MPG, $3.50/gal: $35.