Road Trip Fuel Calculator
Plan Your Road Trip Budget Before You Hit the Road
Gas prices can swing a lot depending on where you’re driving, what you’re driving, and how far you’re going, which makes it hard to budget for a trip until you’re already on it. Our free Road Trip Fuel Cost Calculator takes the guesswork out of the equation, giving you a quick, reliable estimate of what you’ll spend on gas before you leave the driveway.
Enter your trip details
Estimate how much gas your trip will use and what it will cost.
Estimated trip cost
This is an estimate only. Actual fuel use can vary with speed, traffic, weather, terrain, vehicle load, tire pressure and driving habits.
Figures are provided for general informational and trip-planning purposes only and do not constitute financial advice. We make no guarantee of accuracy and are not responsible for any difference between estimated and actual fuel costs, including changes in fuel prices between when you use this tool and when you travel.
How it works
Enter your trip distance in miles or kilometers, choose whether it’s a one-way drive or a round trip, and select the vehicle type that’s closest to yours, from a compact car to a full-size pickup. If you know your vehicle’s exact fuel economy (it’s usually listed on your dashboard, owner’s manual, or window sticker), you can enter that directly for a more precise number. Finally, plug in the current price of gas near you, and the calculator instantly returns your estimated total fuel cost, total distance, and how much fuel the trip will use.
Why it’s useful
Whether you’re planning a weekend getaway, a cross-country move, or just comparing routes, knowing your fuel cost ahead of time helps you set a realistic travel budget and avoid surprises at the pump. It’s also a handy way to compare the cost difference between two route options, or to see how much a more fuel-efficient vehicle could save you on a longer drive.
Keep in mind that this tool provides an estimate, not a guarantee. Real-world fuel consumption depends on factors like speed, traffic conditions, terrain, weather, and how heavily your vehicle is loaded, so actual costs may vary from what’s shown here. For the most accurate planning, we recommend checking current local gas prices right before your trip and adjusting the numbers as needed.