Road Trip Cost Calculator: Gas, Tolls, Lodging and Cost Per Person
Calculate U.S. road trip costs for fuel/electricity, tolls, parking, lodging, food, and more, and view per‑mile, per‑traveler, and per‑day totals.
Last updated: 18 October 2026
Road Trip Cost Calculator
Estimate the total cost of a road trip — fuel or charging, tolls, parking, lodging, and food — and see the cost per mile, per traveler, and per day. Enter your distance, vehicle efficiency, and prices to get a complete breakdown.
Road Trip Cost Calculator
Results
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How the Road Trip Cost Calculator Works
The calculator adds every major cost category for a drive: fuel or electricity, tolls, parking, lodging, food, and any other expenses you enter. It then divides the total by distance, travelers, and days so you can compare trips and budgets.
Formulas Used
- Fuel gallons = Total distance (miles) ÷ Fuel economy (mpg)
- Fuel cost = Fuel gallons × Price per gallon ($/gal)
- Electric energy (kWh) = Total distance (miles) ÷ Efficiency (miles/kWh)
- Electricity cost = Energy (kWh) × Price per kWh ($/kWh)
- Total trip cost = Fuel/electric cost + Tolls + Parking + (Lodging nights × Nightly rate) + (Trip days × Travelers × Food per day) + Other costs + (Total distance × Per-mile wear cost)
- Cost per mile = Total trip cost ÷ Total distance
- Cost per traveler = Total trip cost ÷ Number of travelers
- Cost per day = Total trip cost ÷ Trip days
- Driving hours = Total distance ÷ Average speed (mph)
All calculations use exact decimal arithmetic. Fuel quantities are shown to two decimals; money is rounded half-up to the nearest cent. If you enter kilometers, they are converted using 1 mile = 1.609344 km exactly. If you enter liters per 100 km, the conversion uses 1 US gallon = 3.785411784 liters exactly (NIST definitions).
Worked Examples
Example 1: Gasoline Round Trip (600 miles each way)
Inputs: Distance 600 mi one way, round trip = 1,200 mi total. Vehicle: gasoline, 28 mpg. Fuel price: $3.40/gal. Tolls: $35. Parking: $40. Lodging: 2 nights × $140 = $280. Food: 3 days × 2 travelers × $45 = $270. Travelers: 3. Average speed: 60 mph.
Calculations:
- Fuel gallons = 1,200 ÷ 28 = 42.8571 gal (shown as 42.86 gal)
- Fuel cost = 42.8571 × $3.40 = $145.7143 (rounded to $145.71)
- Lodging = 2 × $140 = $280.00
- Food = 3 × 2 × $45 = $270.00
- Total = $145.71 + $35.00 + $40.00 + $280.00 + $270.00 = $770.71
- Cost per mile = $770.71 ÷ 1,200 = $0.64
- Cost per traveler = $770.71 ÷ 3 = $256.90
- Driving time = 1,200 ÷ 60 = 20.00 hours
Example 2: Electric One-Way Trip (300 miles)
Inputs: Distance 300 mi one way, not round trip. Vehicle: electric, 3.5 miles/kWh. Electricity price: $0.18/kWh. No tolls, parking, lodging, or food. Travelers: 1. Average speed: 60 mph.
Calculations:
- Energy = 300 ÷ 3.5 = 85.7143 kWh
- Electricity cost = 85.7143 × $0.18 = $15.4286 (rounded to $15.43)
- Total = $15.43
- Cost per mile = $15.43 ÷ 300 = $0.05
- Driving time = 300 ÷ 60 = 5.00 hours
These examples use hypothetical numbers to illustrate the arithmetic. Your actual costs depend on real-world efficiency, current fuel or electricity prices, and the specific costs you enter.
Cost Comparison: What Drives the Total
The table below shows how different choices affect a 1,000-mile round trip for two travelers over three days. All scenarios use $3.50/gal fuel and $150/night lodging.
| Scenario | Vehicle | MPG / mi per kWh | Fuel Cost | Lodging | Food | Total | Per Person |
|---|---|---|---|---|---|---|---|
| Efficient sedan | Gasoline | 35 mpg | $100.00 | $300.00 | $270.00 | $670.00 | $335.00 |
| SUV | Gasoline | 22 mpg | $159.09 | $300.00 | $270.00 | $729.09 | $364.55 |
| Electric sedan | Electric | 3.8 mi/kWh | $47.37 | $300.00 | $270.00 | $617.37 | $308.69 |
| Electric SUV | Electric | 2.8 mi/kWh | $64.29 | $300.00 | $270.00 | $634.29 | $317.15 |
Cost Category Breakdown
For a typical 1,200-mile family trip (4 people, 3 days, 25 mpg, $3.40/gal):
✓ Included in this calculator
- Fuel or electricity cost from distance, efficiency, and price
- Tolls, parking, lodging, food, and other expenses you enter
- Per-mile wear and depreciation (if you enter an amount)
- Cost per mile, per traveler, per day
- Driving time from average speed
- Round-trip or one-way toggle
- Miles or kilometers, gallons or liters per 100 km
✗ Not included (enter manually if needed)
- Route-specific toll lookup or live fuel prices
- Traffic delays, detours, or elevation effects on efficiency
- Towing, air conditioning, tire pressure impacts
- Vehicle depreciation and insurance (unless you enter a per-mile amount)
- Rental car pricing or tax deductions
- Business mileage rates (IRS rates are for tax purposes, not personal cost)
Common Mistakes to Avoid
- Forgetting the return trip: The calculator defaults to round trip. Uncheck the box only for genuine one-way trips.
- Using sticker MPG instead of real-world MPG: EPA window-sticker numbers are laboratory estimates. Use your actual observed fuel economy for accurate results.
- Ignoring tolls and parking: These can add $50–$200+ on major corridors. Enter them even if approximate.
- Mixing kilometers and miles: If you enter kilometers, keep all distance inputs in kilometers. The calculator converts internally using exact NIST factors.
- Leaving out lodging and food: For multi-day trips, these often exceed fuel cost. Enter realistic daily amounts.
- Assuming driving time equals trip time: The driving-time estimate uses constant average speed with no stops, traffic, or breaks. Add 15–25% for realistic travel time.
Frequently Asked Questions
How do I calculate gas cost for a trip?
Divide the total trip distance by your vehicle's real-world miles per gallon (mpg) to get gallons needed. Multiply gallons by the current price per gallon. For a round trip, double the one-way distance first. This calculator does the arithmetic for you and adds tolls, lodging, food, and other costs.
How do I calculate fuel cost per mile?
Divide the total fuel cost by the total trip distance. For example, if fuel cost is $145.71 for 1,200 miles, the fuel cost per mile is $0.12. This calculator shows both fuel-only cost per mile and total cost per mile (including all expenses).
How much does a road trip cost?
It depends on distance, vehicle efficiency, fuel or electricity price, tolls, parking, lodging nights and rates, food budget per person per day, number of travelers, and any other costs. A 1,200-mile round trip for two people in a 28 mpg car at $3.40/gal with two hotel nights and moderate food might total $600–$900. Enter your specific numbers above for a personalized estimate.
How long will my road trip take?
Divide total distance by your average speed. For 600 miles at 60 mph, driving time is 10 hours. This excludes stops, traffic, speed changes, and breaks. Add 15–25% for a realistic door-to-door estimate.
How do I calculate electric car road trip cost?
Divide total miles by your EV's miles per kWh (typically 2.5–4.5) to get kWh needed. Multiply by your electricity price per kWh (home charging or public fast charging). This calculator has an electric mode that uses miles per kWh and price per kWh instead of mpg and price per gallon.
What is the IRS standard mileage rate and should I use it?
The IRS publishes standard mileage rates for business, medical, charitable, and moving purposes (tax deductions). These rates include depreciation, insurance, repairs, and fuel — they are not the out-of-pocket cost of a personal trip. If you want to include wear and depreciation, enter your own per-mile estimate in the optional field. Do not use the IRS rate as a personal trip cost unless it matches your actual costs.
Where can I find my vehicle's real MPG?
Track your own fuel fill-ups: miles driven ÷ gallons added. For EPA ratings, visit FuelEconomy.gov (DOE and EPA). Remember that real-world MPG is often 10–20% lower than the combined rating.
Where can I find current fuel prices?
The U.S. Energy Information Administration (EIA) publishes weekly retail gasoline and diesel prices by region. For real-time local prices, use apps like GasBuddy or AAA. Enter the price you expect to pay.
Glossary
- MPG (miles per gallon)
- Distance a vehicle travels on one gallon of fuel. Higher is more efficient.
- Miles per kWh
- Distance an electric vehicle travels on one kilowatt-hour of electricity. Higher is more efficient.
- Round trip
- A journey to a destination and back to the starting point. Distance is doubled.
- Cost per mile
- Total trip cost divided by total distance. Useful for comparing vehicles or routes.
- Per-mile wear cost
- An optional user-entered amount for vehicle depreciation, maintenance, and tire wear per mile driven.
Official References & Method
Method & Sources
- Fuel economy ratings: U.S. Department of Energy and EPA, FuelEconomy.gov — vehicle MPG and EV efficiency ratings (reference only; use real-world figures).
- Retail fuel prices: U.S. Energy Information Administration, EIA — weekly gasoline and diesel price surveys (reference only; enter your local price).
- Unit conversions: National Institute of Standards and Technology (NIST) — 1 mile = 1.609344 km exactly; 1 US gallon = 3.785411784 liters exactly.
- IRS mileage rates: Internal Revenue Service, IRS.gov — standard mileage rates for tax purposes only (reference; not a personal trip cost).
Calculation engine: client-side JavaScript, exact decimal arithmetic
Limitations, Exclusions & Assumptions
- All fuel prices, tolls, and efficiency values are user-entered estimates. No live data is fetched.
- Driving time assumes constant average speed with no stops, traffic, weather delays, or speed variations.
- Vehicle efficiency does not account for load, towing, elevation, air conditioning, tire pressure, or temperature effects.
- Lodging and food costs are simple multipliers; they do not reflect price variation by location, season, or booking method.
- Vehicle depreciation, insurance, maintenance, and repairs are excluded unless you enter a per-mile wear amount.
- Rental car costs, tax deductions, and business expense rules are outside the scope of this personal trip calculator.
- Results are estimates with limitations. Actual costs will vary. Verify critical budget decisions independently.
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