Estimate the total cost of your road trip including gas, food, lodging, and more.
Quick answer: A 1,000-mile road trip in a car that gets 30 MPG costs about $116 in gas at $3.50/gallon — closer to $350 for a 3,000-mile cross-country drive. Add your own mileage, MPG, and gas price below for a full trip estimate including food and lodging.
A road trip budget has four main categories: gas, lodging, food, and activities. Gas is your biggest variable — it swings based on your car's fuel efficiency and current pump prices. Everything else is more predictable, but it adds up fast. Build your budget around these four pillars before you leave, and you won't be caught off guard mid-trip.
One rule that holds up well: add a 15% buffer on top of your calculated total. Unexpected detours, a flat tire, parking fees in cities, or a spontaneous stop at a state park all eat into your budget in ways that are hard to anticipate. That buffer is your peace of mind.
To estimate fuel cost, divide your total miles by your car's MPG to get gallons needed, then multiply by the current gas price per gallon. If you're driving 1,000 miles in a car that gets 30 MPG at $3.50/gallon, that's about 33 gallons — roughly $116 in fuel. On a longer cross-country trip at 3,000 miles, the same car runs you around $350 just in gas.
A few things will affect your real-world number: highway driving is more efficient than city driving, air conditioning drops MPG by 5–25% in hot climates, and a loaded car (luggage, passengers) burns more fuel. If you're hauling a trailer or driving a truck, account for the added drag and weight.
Hotel costs vary enormously depending on where you're stopping. Rural highway motels might run $70–$90/night, while stops in popular cities or national park gateway towns can run $180–$300+. Book in advance whenever possible — last-minute rooms in tourist areas are significantly more expensive.
Camping is by far the cheapest option at $15–$40/night for most state and national park campgrounds. If you have a flexible itinerary and camping gear, mixing in a few nights under the stars can cut your lodging cost by 60% or more. Apps like Campendium and The Dyrt help find free or low-cost dispersed camping on public land.
Road trip food costs catch most people off guard. At $50/person/day for three meals plus snacks and drinks, a two-person trip covering five days runs $500 in food alone — not counting the $8 coffees and $6 gas station snacks that feel minor in the moment. Packing a cooler with groceries for breakfast and lunch, then eating out for dinner only, can cut this by 40–50% without sacrificing the experience.
Budgeting $30–$40 per person per day for food is realistic if you're mixing in some grocery runs. Budget $60–$80/person/day if you're eating every meal at restaurants.
This category is the most personal. National parks charge $20–$35 per vehicle for entry. Popular attractions, museums, or tours can add $20–$80 per person per stop. Parking in major cities costs $20–$50/day. Tolls on major interstate corridors like I-95 can add $30–$60 for a long stretch.
If sightseeing is a big part of your trip, budget activities separately rather than rolling them into a vague "miscellaneous" line. It's easier to make trade-offs when you can see exactly where the money is going.
Travel on weekdays when hotel rates are typically 20–30% lower than weekends. Use GasBuddy or the AAA app to find the cheapest gas along your route — prices can vary by $0.30–$0.50/gallon within a few miles of each other. Fill up in rural areas and smaller towns rather than highway rest stops, which typically charge a premium.
If you're going with a group, splitting costs makes road trips one of the most affordable forms of travel. Four people sharing a $120/night hotel room pay $30 each — cheaper than any flight, hotel, or Airbnb in most markets.
Dividing by the number of travelers gives you the real measure of a road trip's value. Gas and lodging split evenly. Food is per-person regardless. Activities usually charge per person. The more travelers, the lower your per-person cost on fixed expenses — which is why road trips with 3–4 people are often the best deal in travel.
A long road trip puts more miles on your car in a few days than most people drive in a month, and that has a real (if often ignored) cost. Budget for an oil change if you'll cross the recommended mileage interval mid-trip, and factor in a basic tire pressure and tread check before you leave — a blowout on the highway costs far more in time and money than the $20 it takes to catch a problem beforehand. For a longer trip, it's also worth setting aside $50–$100 as a buffer for the accelerated wear (wiper blades, brake dust, general mileage) that a multi-day highway trip adds compared to normal driving.
Gas, food, and lodging prices can shift substantially as you cross state lines. California, Hawaii, and the Pacific Northwest typically run well above the national average on gas; the Gulf Coast states tend to run below it. Lodging follows a similar pattern — a highway motel in the Midwest can cost half what a comparable room costs near a coastal tourist destination. If your route crosses several regions, it's worth checking average prices for each leg separately rather than applying one flat national average to the whole trip, since a route through high-cost regions can run 20–30% over a naive estimate.
Renting a car for the trip instead of driving your own adds a cost this calculator doesn't include — typically $40–$90/day depending on vehicle class and season, plus fuel. For trips under about 500 miles round-trip, renting a more fuel-efficient car can sometimes offset the rental fee through gas savings alone, especially if your own vehicle is a larger SUV or truck.
This calculator estimates fuel costs for a road trip based on distance, MPG, and current gas prices. Results are estimates based on the values you enter. Actual fuel costs may vary depending on driving conditions, vehicle load, terrain, and real-time gas prices. Always verify current fuel prices before your trip. This tool is for informational purposes only.