Road Trip Cost Calculator

How the road trip cost formula works

Every road trip cost calculator uses the same core math; what differs is how many cost categories it remembers. This one itemizes all of them:

• Fuel (gas/diesel): total distance ÷ fuel economy × fuel price. Example: 1,000 mi ÷ 30 mpg × $3.50/gal = $116.67 (33.33 gallons).
• Fuel (EV): total distance × consumption × charging rate. Example: 1,000 mi × 0.30 kWh/mi × $0.15/kWh = $45.00 (300 kWh) — or $120 at a $0.40 Supercharger rate.
• Towing penalty: effective economy = rated mpg ÷ (1 + penalty). A 15% penalty turns 30 mpg into ~26.1 mpg.
• Hotels: nights × nightly rate × (1 + hotel tax). Food: days × travelers × daily spend. Per person: grand total ÷ travelers.
• Drive vs fly: driving total vs (ticket × travelers + destination rental + airport parking). Lowest wins.

Typical fuel economy by vehicle (real-world)

Verify a row yourself: 1,000 ÷ 24 × 3.50 = 145.833… → $145.83. EV sedan: 1,000 × 0.28 = 280 kWh; × $0.15 = $42.00; × $0.40 = $112.00.

Worked example: 1,000-mile trip, 2 people

Sedan at 30 mpg, $3.50/gal, $25 tolls, 3 hotel nights at $110 (+12% tax = $369.60), 3 days of food at $40/person ($240), $15 parking, $50 activities:

Fuel $116.67 + tolls $25.00 + hotels $369.60 + food $240.00 + parking $15.00 + activities $50.00 = $816.27 total, $408.13 per person. Press “Load example” above to see this exact scenario calculated live.

Drive vs fly: when does flying win?

Driving costs scale with distance; flying costs scale with people. On a classic cross-country road trip — New York to Los Angeles is about 2,800 miles — a 30-mpg car at $3.50/gal spends roughly $326.67 on fuel (2,800 ÷ 30 × 3.50), before hotels and food. One car carrying four people splits fuel, tolls and hotels four ways — driving almost always wins for groups. Solo travelers on routes over ~800 miles often save by flying, especially once you price the destination rental car. The comparison above makes it explicit instead of a gut feeling.

Metric & international notes

Switch to km / L/100km for Canada, the UK (use “petrol” prices per litre), Europe, Australia and everywhere else metric. Enter all prices in your own currency and pick it from the currency selector — the tool formats with it but never converts (no exchange-rate fetching, fully offline).

Honest scope

This calculator cannot know live gas prices, real-time toll rates or your exact route — it computes deterministically from the numbers you enter. Treat the result as a budgeting estimate (aim: within 10–15% of reality), not a quote. Check toll authority sites for your corridor and use your car’s real-world economy, not the brochure figure.

Frequently asked questions