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A road trip feels simple until you tally what it actually costs. Gas alone can surprise you. Add tolls on a busy corridor, a couple nights of hotels, and meals for two, and a "cheap weekend trip" can run $500 to $1,200 without anyone noticing where the money went.
Everyone budgets for gas. Almost nobody budgets for the other four categories that make up a real road trip: tolls, lodging, food, and the small stuff that doesn't fit anywhere else. Gas is usually not even the largest line item once you add a single night in a hotel. That is the number this calculator is built to surface before you leave, not after you get the credit card statement.
Gas cost is straightforward math: total miles divided by your vehicle's MPG, times the price per gallon. The two levers that change this the most are your vehicle (a pickup at 18 MPG burns roughly twice the gas of a hybrid at 45 MPG for the same distance) and the regional gas price, which can swing $0.50 to $1.00 per gallon depending on where you are filling up.
A route through rural states can have zero tolls. The same distance through the northeast corridor, with E-ZPass segments, bridges, and tunnels, can add $40 to $80 each way. Tolls are the single most route-dependent cost in this calculator, which is why the estimate is a range by tier rather than a flat number.
One night at a mid-range hotel can cost more than the entire gas bill for a 500-mile trip. Lodging scales directly with nights on the road, and the tier you pick (camping through premium hotel) moves the total more than almost any other input.
Food cost multiplies by both travelers and days, so it grows fast for a family or a longer trip. A budget tier of fast food and gas station snacks runs $25 to $40 per person per day. Full sit-down dining runs $70 to $120 per person per day.
Parking, attractions, a rental car fee if you are not driving your own vehicle, pet fees at a pet-friendly hotel. Individually small, collectively real. The Advanced Inputs section above lets you add these in without cluttering the main form.
A couple in one hotel room pays the same lodging cost whether it is 1 traveler or 2, since the Number of Travelers input only scales food cost, not lodging. For a family with kids, lodging may require a larger room or a second room, typically $20 to $50 more per night than the tier shown, which you can add via Additional Daily Costs. Food cost always scales linearly with travelers and days.
Gas prices vary by $0.50 to $1.00 per gallon between high-cost states like California and lower-cost states in the rural Midwest and South. The gas price input is overridable for exactly this reason. Tolls vary even more dramatically: a 500-mile trip through Montana likely has zero tolls, while the same distance through the Boston-to-DC corridor can run $70 to $100 each way. This calculator uses US-based assumptions for gas and lodging. For international trips, override the gas price input with your local fuel cost per gallon equivalent.
Maria and Dave, a couple in Chicago, planned a weekend trip to Nashville: 471 miles one way. They budgeted "$150 for gas, we'll figure out the rest." Their mid-size sedan gets 27 MPG, and gas along the route averaged $3.50 a gallon. Gas alone came to about $122 round trip, close to their guess.
What they had not budgeted: two nights at a budget hotel near downtown Nashville ran $118 a night after taxes and fees, $236 total. Food for two over 2.5 days of eating out, mostly casual dining with a couple of nicer dinners, ran about $380. A small amount of toll on the Indiana stretch added $18. Total trip cost: roughly $756, not the $150 they had mentally set aside for "gas and we'll wing it."
They still went, and they still had a great weekend. The point is not that the trip was a mistake. The point is that "$150 for gas" was never the real number, and knowing the real number before you leave means no surprise when the statement arrives.
If this is a business trip, you may be able to deduct actual vehicle expenses or take the IRS standard mileage deduction instead of tracking gas, maintenance, and depreciation separately. The standard mileage rate changes annually. Consult a tax professional or the current IRS Standard Mileage Rates page to confirm eligibility and the rate for your tax year. This calculator does not compute a mileage deduction; it estimates your actual out-of-pocket trip cost.
Selecting EV as your vehicle type switches the calculator to electricity cost and adds a charging-stop estimate. EV charging adds a time cost that gas vehicles do not have: a fast charger typically takes 20 to 45 minutes to add meaningful range, while a Level 2 charger can take several hours. A 500-mile trip in an EV with roughly 300 miles of range needs at least one non-trivial charging stop each way. Factor that time into your schedule, not just your budget. Gas prices can also swing during a longer trip, so treat the electricity rate and gas price inputs as a snapshot, not a guarantee, and check a routing tool like PlugShare or your vehicle's navigation for actual charger locations and current prices.
A typical 500-mile-each-way road trip (1,000 miles round trip) for two people over 2 nights costs approximately $470 to $720, including gas, tolls, lodging, and meals. Gas alone for a mid-size car runs $140 to $150. Lodging is often the largest single cost on multi-night trips.
Road trip gas cost equals total miles divided by vehicle MPG, multiplied by the price per gallon. For a 1,000-mile round trip in a 28 MPG car at $4.48 per gallon: 1,000 / 28 × $4.48 is approximately $160 in gas. Use the calculator above to enter your specific vehicle and current gas price.
A road trip for two people typically runs $0.45 to $0.70 per mile including gas, tolls, and a share of lodging and food. Gas alone usually costs $0.10 to $0.18 per mile depending on vehicle and fuel price. A pickup truck or SUV runs meaningfully more per mile than a hybrid or economy car.
For most US routes under 500 miles, driving is often comparable to or cheaper than flying once you count both round-trip tickets. For 2 travelers, driving a 500-mile route round trip may run $470 to $720, while 2 round-trip domestic flights for the same distance often run $300 to $700. Gas prices and airfare both move the answer, so check both before you decide.
A reasonable road trip food budget is $40 to $70 per person per day for a mix of fast food and casual dining. Budget travelers eating mostly fast food and gas station snacks may spend $25 to $40 per person per day. Travelers eating mostly sit-down meals should budget $70 to $120 per person per day.
Gas cost uses your vehicle MPG and the entered gas price per gallon: total miles / MPG × price per gallon. Toll estimates use the midpoint of published per-way ranges for the selected tier, doubled for round trips. Lodging costs use the midpoint of 2026 national average hotel rates by tier. Food costs use the midpoint of per-person daily spending by dining tier, multiplied by travelers and by nights on the road (a 2-night trip assumes 2 days of meals away from home).
EV mode: electricity cost uses total miles divided by an assumed 100 MPGe average combined efficiency (a DOE-style assumption, not tied to a specific model), times the electricity rate entered; charging stop count is estimated from total miles and vehicle range.
Low and High estimates use the low and high end of the same lodging, food, and toll tier you selected above, with gas cost held constant (gas price and MPG are direct inputs, not tiers). Additional Daily Costs and rental car fees do not vary between Low, Mid, and High. Switching tiers in the form produces a different range entirely; this range shows how much your selected style of trip could vary, not the full spread across every tier.
The Fly vs Drive comparison estimates airfare using a rough linear model ($0.30 to $0.70 per mile per person, one-way-distance based) calibrated to typical short-haul domestic fares. It is not a live fare lookup. Check Google Flights or a similar tool for your specific route and dates before deciding.
Constants are sourced from EIA (gas), DOE fueleconomy.gov (vehicle MPG and the 33.7 kWh-per-gallon-equivalent EV conversion), industry lodging and dining benchmarks, and E-ZPass/iPass published toll schedules. Every constant below is flagged for verification against its primary source; see EXPERT_GROUND_TRUTH.md for this calculator.
Verification queue tracked in calculators/road-trip-cost-calculator/EXPERT_GROUND_TRUTH.md.
Disclaimer. Cost estimates are based on 2026 national averages for gas, lodging, and food. Actual costs will vary based on your route, vehicle, season, and travel style. Gas price default is updated at publication; check GasBuddy for current route prices. This calculator is for educational and planning purposes only and does not constitute financial or tax advice. For business mileage deduction questions, consult a tax professional.
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