Automotive calculators

Road Trip Cost Calculator

Updated Sep 21, 2026 By Infinity Calculator
Rate Formulas
Display Preferences
Unit System
Presets every unit menu below (miles/gallons vs km/liters) and converts the values.
Relabels cost displays only — no exchange-rate conversion is applied.
Route Builder
    Type 4+ characters (city, state or ZIP) for suggestions.
      Type 4+ characters (city, state or ZIP) for suggestions.
      Intermediate Stops (travel order — drag the handle or use arrow keys to reorder)
      Trip Type
      Round-Trip adds the return legs, doubling distance, fuel and tolls.
      Used for time-of-day congestion and peak toll windows.
      Drives the per-person cost split in the results.
      Vehicle & Fuel Settings
      Sets a default efficiency and the toll vehicle class multiplier.
      Selects the per-state price tier for each state you cross.
      Equivalent: 9.05 L/100 km · 11.05 km/L
      Read-only blended average of the state prices along your route.
      Per-State Gas Price Engine
      State average reference set — see results for the blended rate.
      Toll Settings
      Transponder holders pay discounted rates; plate-billed trips pay a premium.
      Toll Estimation Method
      Tolls are estimated per state turnpike, bridge and tunnel segment your route crosses, then adjusted for your vehicle class and payment method.
      Your Toll Class
      Class multiplier applied: 1.00× (2-axle passenger vehicle).
      Advanced: Full Ownership Costs (Optional)
      Compare to Flying (Optional)
      Defaults to your passenger count.
      Round-trip fare if you selected a round trip.

      Trip Estimate

      Route Options
      Selected route drives the breakdown and the map below.
      Total Trip Cost
      —
       
      Total Distance
      —
       
      Drive Time
      —
       
      Cost Per Person
      —
       
      Cost Breakdown
      Segment Detail
      LegDistanceTimeFuelTollsSubtotal
      StateDistanceGas PriceFuelTollsSubtotal
      Drive vs. Fly (Estimate)

      Schematic route map (great-circle path between stops). Focus the map and use the arrow keys to pan.

      Where the Money Goes
      Route Option Comparison
      Step-by-Step Solution

      Introduction

      This Road Trip Cost Calculator tells you what your drive will really cost before you leave the driveway. Type in where you start, where you are going, and any stops along the way.

      It adds up your gas cost, tolls, and drive time. Gas is priced state by state, so a trip through cheap-gas states costs less than a trip through pricey ones. Tolls change based on your vehicle type and whether you use E-ZPass, SunPass, or FasTrak. You can also add wear-and-tear costs like gas mileage loss, insurance, and repairs to see the true price per mile.

      You pick the route that fits you best: cheapest, fastest, or balanced. The tool shows all three side by side with cost, time, and distance. Split the total by the number of riders to see each person's share. Not sure if you should drive or fly? Enter ticket prices and the calculator compares both.

      Charts, a route map, and a step-by-step math breakdown show where every dollar goes. Switch between miles and kilometers, gallons and liters, and five currencies.

      How to use our Road Trip Cost Calculator

      Enter your start point, stops, end point, and a few car and fuel details. The calculator shows your total trip cost, distance, drive time, cost per person, tolls, fuel, and a drive vs. fly comparison.

      Unit System: Pick Imperial for miles and gallons, or Metric for kilometers and liters. It sets every other unit menu for you.

      Distance Unit: Choose if results show miles or kilometers.

      Fuel Volume Unit: Choose US gallons, Imperial gallons, or liters for the fuel used.

      Currency: Pick the money symbol you want to see. It only changes the label, not the rate.

      From (Origin): Type your starting city, "City, ST", or ZIP code, then pick it from the list. Or tap the crosshair button to use your current location.

      Swap button: Click it to flip your start and end points.

      To (Destination): Type where you are going and pick it from the list.

      Intermediate Stops: Click "Add Stop" for each place you stop along the way. Drag the handle or use arrow keys to change the order. Click "Optimize Stop Order" to let the tool find the shortest order.

      Trip Type: Choose One-Way, or Round-Trip to add the drive home.

      Departure Date & Time: Set when you leave. This changes traffic and peak toll rates.

      Number of Passengers: Enter how many people are in the car. This splits the cost per person.

      Vehicle Type: Pick car, SUV, truck, minivan, motorcycle, or RV. This sets a default MPG and your toll class.

      Fuel Type: Choose regular, mid-grade, premium, or diesel. Each one has its own price per state.

      Fuel Efficiency: Enter your gas mileage and pick the unit (MPG, L/100 km, or km/L). Change it if your car does better or worse than the default.

      Gas Price: Enter the price you pay per gallon or liter. This box is locked when the per-state engine is on.

      Per-State Gas Price Engine: Leave it on to price fuel with each state's average along your route. Turn it off to use one price you type in.

      Toll Payment Method: Pick your transponder (E-ZPass, SunPass, FasTrak, other) or cash/plate. Transponders get lower toll rates.

      Include Full Ownership Costs: Turn this on to add wear-and-tear costs to your total, not just gas and tolls.

      Depreciation per Distance: Enter how much value your car loses each mile or kilometer. About $0.08 per mile is normal for a car.

      Insurance per Distance: Enter your insurance cost per mile or kilometer. Take your yearly premium and divide it by your yearly miles.

      Maintenance & Wear per Distance: Enter the cost of tires, oil, brakes, and service per mile or kilometer.

      Show the Drive vs. Fly comparison: Turn this on to see if flying would cost less than driving.

      Number of Airline Tickets: Enter how many tickets you would buy. It matches your passenger count by default.

      Ticket Price per Person: Enter the fare for one person. Use the round-trip fare if you picked a round trip.

      Calculate and Reset: Click Calculate to see your trip estimate. Click Reset to start over with the default trip.

      Route Options: Pick Cheapest, Balanced, or Fastest. Your choice changes the cost breakdown, the tables, and the map.

      Map and Live Traffic: Use the zoom and fit buttons to view your route. Turn Live Traffic off to see free-flow drive times instead.

      Road Trip Costs Explained

      A road trip costs more than just a tank of gas. The real price of driving is made up of a few parts, and each one grows with every mile you drive. Knowing these parts helps you plan a budget before you leave the driveway.

      Fuel

      Fuel is usually the biggest cost. It depends on three things: how far you drive, how many miles your car gets per gallon (MPG), and what gas costs. A car that gets 30 MPG uses half the fuel of one that gets 15 MPG on the same trip. Gas prices also change a lot from state to state because each state adds its own fuel tax. Driving from Texas to California can mean paying almost two dollars more per gallon by the end of the trip. Premium and diesel fuel cost more per gallon than regular.

      Tolls

      Many highways, bridges, and tunnels charge a fee. Toll roads are common in the Northeast, Florida, Texas, and parts of the Midwest. What you pay depends on where you drive, how many axles your vehicle has, and how you pay. A transponder like E-ZPass, SunPass, or FasTrak usually gets you a lower rate. If you have no transponder, a camera reads your plate and mails you a bill that often costs more. Big vehicles like RVs and trucks pay higher rates than cars.

      Wear and Tear

      Miles also cost you money you do not see at the pump. Tires wear out, oil needs changing, brakes get thin, and your car loses resale value. Many drivers add about 8 cents a mile for depreciation, 4 cents for insurance, and 3 cents for upkeep. Over a 1,000-mile trip, that is about $150 in hidden cost.

      Drive Time and Traffic

      Trip time is not just distance divided by speed limit. Rush hour, city traffic, and stops for food and gas all add time. Leaving early in the morning or late at night is often faster than leaving at 5 p.m. A slower but toll-free route may save money but cost you hours.

      Driving vs. Flying

      Driving usually wins for short trips and for groups. One car costs the same whether one person or five ride in it, so splitting fuel and tolls makes each person's share small. Flying often wins for long trips or for one or two travelers. Plane tickets are not the whole cost of flying. Parking, bags, and a rental car at the other end add up too.

      Ways to Spend Less

      • Fill up in states with cheap gas before crossing into pricey ones.
      • Keep tires at the right pressure and drive near 60 mph for better MPG.
      • Get a toll transponder if your route has toll roads.
      • Pack light and take off the roof rack to cut drag.
      • Split costs with passengers before the trip starts.

      Formulas used

      Great-circle distance between stops (haversine)
      d_{gc} = 2R\arcsin\left(\sqrt{\sin^2\!\left(\frac{\varphi_2-\varphi_1}{2}\right)+\cos\varphi_1\cos\varphi_2\sin^2\!\left(\frac{\lambda_2-\lambda_1}{2}\right)}\right),\quad R = 3958.7613\ \text{mi}
      Road distance of a leg (and route-option scaling)
      d_{\text{leg}} = \left(1.17\,d_{gc} + 2\right)\times f_{\text{dist}},\qquad f_{\text{dist}} \in \{1.06,\;1.00,\;0.98\}
      Fuel cost (summed state by state)
      C_{\text{fuel}} = \sum_{s} \frac{d_s}{E} \cdot P_s,\qquad P_s = P_{\text{state},s} + \Delta_{\text{grade}}
      Toll cost per state (class and payment adjusted)
      C_{\text{toll}} = \sum_{s} \left(d_s \cdot r_s + F_s\right)\cdot f_{\text{toll}}\cdot m_{\text{veh}}\cdot k_{\text{pay}}
      Ownership cost (optional)
      C_{\text{own}} = d_{\text{total}}\left(c_{\text{dep}} + c_{\text{ins}} + c_{\text{maint}}\right)
      Total trip cost, per distance and per person
      C_{\text{total}} = C_{\text{fuel}} + C_{\text{toll}} + C_{\text{own}},\qquad C_{\text{/dist}} = \frac{C_{\text{total}}}{d_{\text{total}}},\qquad C_{\text{/person}} = \frac{C_{\text{total}}}{n_{\text{pax}}}
      Traffic-adjusted drive time
      t = \frac{d_{\text{total}}}{v} \times f_{\text{traffic}},\qquad f_{\text{traffic,weekend}} = 1 + 0.55\,(f_{\text{traffic}}-1)
      Drive vs. fly comparison
      C_{\text{fly}} = n_{\text{tickets}} \times P_{\text{ticket}},\qquad \Delta = \left|C_{\text{total}} - C_{\text{fly}}\right|

      Frequently asked questions

      How much does a 1,000 mile road trip cost?

      For a car that gets 26 MPG with gas near $3.10 a gallon, fuel for 1,000 miles runs about $119. Add tolls, which can be $0 on free routes or $60+ through the Northeast. If you count wear and tear at 15 cents a mile, add another $150. So a rough range is $120 to $330, before food and hotels.

      How do I calculate gas cost for a road trip?

      Use this formula:

      Gas cost = (miles ÷ MPG) × price per gallon

      Example: 600 miles ÷ 30 MPG = 20 gallons. 20 × $3.20 = $64.

      For a round trip, double the miles first.

      Why is gas cheaper in some states?

      Each state sets its own fuel tax, and those taxes differ by more than 50 cents a gallon. States also differ in how far fuel must travel from refineries, and some, like California, require a special cleaner blend that costs more to make. That is why a gallon can cost under $2.90 in Texas or Mississippi and over $4.60 in California.

      How much does gas cost per mile?

      Divide the gas price by your MPG.

      • 15 MPG at $3.10 = 21 cents per mile
      • 26 MPG at $3.10 = 12 cents per mile
      • 40 MPG at $3.10 = 8 cents per mile

      This is why MPG matters more than gas price on a long trip.

      Is it cheaper to drive or fly?

      Driving usually wins for trips under about 500 miles and for groups of three or more, because one car costs the same no matter how many ride in it. Flying often wins for one or two people going over 1,000 miles. Add airport parking, bag fees, and a rental car to the ticket price before you compare.

      Do you save money with E-ZPass?

      Yes. Transponder users usually pay about 20% less than drivers billed by license plate. Plate billing, also called toll-by-mail, adds a fee on top of the toll. On a New York to Washington, DC drive, a transponder can save a few dollars each way, and much more on repeat trips.

      How many axles does my vehicle have for tolls?

      Most cars, SUVs, minivans, and pickups are 2-axle vehicles and pay the base rate. Motorcycles often pay less, sometimes about half. An RV, or a car towing a trailer, counts as 3 or more axles and can pay double the car rate or more. Height and weight also raise your class on some turnpikes.

      How much should I budget per mile for wear and tear?

      A common set of numbers for a normal car is:

      • Depreciation: 8 cents per mile
      • Insurance: 4 cents per mile
      • Maintenance and tires: 3 cents per mile

      That is about 15 cents a mile, or $150 per 1,000 miles. Big trucks and RVs cost more.

      How do I figure out my insurance cost per mile?

      Take your yearly premium and divide it by the miles you drive in a year. If you pay $1,400 a year and drive 12,000 miles, that is about 12 cents per mile. Many drivers who put on more miles land near 4 to 6 cents.

      What is the best time of day to leave on a road trip?

      Leave before 6 a.m. or after 7 p.m. to skip rush hour. Traffic can add about 20% to your drive time from 7 to 10 a.m. and again from 4 to 7 p.m. on weekdays. Midday is better but still slower than open roads. Weekends have lighter commuter traffic but heavier beach and holiday traffic.

      What speed gives the best gas mileage?

      Most cars do best between 50 and 60 mph. Above that, wind drag climbs fast. Driving 75 mph instead of 65 can cut your MPG by 10% to 15%. Steady speed helps too, so cruise control on flat highway saves fuel.

      How many miles can you drive in a day on a road trip?

      A safe target is 500 to 550 miles, or about 8 to 9 hours of driving with breaks. Two drivers who swap can push 700 to 800 miles. Past that, tired driving gets risky, so plan a hotel stop.

      Does a roof rack or cargo box hurt gas mileage?

      Yes. A loaded roof box can cut highway MPG by 10% to 25% because it adds a lot of wind drag. An empty rack still costs a few percent. On a 1,000-mile trip at 26 MPG, a roof box could add $20 to $30 in fuel. Take it off when you are not using it.

      How do I split road trip costs fairly with friends?

      Add up fuel, tolls, and parking, then divide by the number of riders, driver included. If the driver uses their own car, many groups also add 10 to 15 cents a mile for wear and tear and split that too. Agree on the plan before you leave, and keep receipts or use a shared note.

      Do RVs cost more per mile than cars?

      Much more. A motorhome often gets only 8 to 12 MPG, so fuel alone can run 30 to 45 cents a mile. Tolls are also about double the car rate because of the extra axles and size. But you save on hotels, which can even things out on long trips.

      Which states have the most toll roads?

      The Northeast has the most: New Jersey, New York, Pennsylvania, Delaware, and Maryland all run toll highways, bridges, and tunnels. Florida, Texas, Illinois, Ohio, Indiana, and Oklahoma also have heavy toll networks. Most of the Mountain West and Deep South have few or no tolls.

      Does premium gas improve gas mileage?

      Not unless your car's maker requires it. In a car built for regular, premium gives no real MPG gain and costs about 70 to 80 cents more per gallon. If your manual says premium is required, use it, since regular can cause knock and lost power.

      Is the shortest route always the cheapest?

      No. A short route may run on toll highways, which adds cost. A slightly longer free route can be cheaper in dollars but slower. Also, stop-and-go city roads burn more fuel per mile than steady highway driving, so fewer miles does not always mean less gas.

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