Calculate how far you can drive on a full tank of gas based on tank size and MPG. Estimate your vehicle's driving range.
How far can you go on a full tank? This calculator multiplies your fuel tank capacity by your vehicle's MPG to determine your maximum driving range. Knowing your range helps you plan fuel stops on road trips and avoid running out of gas.
Vehicle range varies dramatically. A compact car with a 12-gallon tank and 35 MPG can travel 420 miles, while a pickup truck with a 26-gallon tank but 18 MPG goes 468 miles. Despite better fuel economy, the compact's smaller tank limits its range.
This tool also shows your reserve range (the last 2 gallons) so you know when the fuel light comes on. Most vehicles' low fuel warnings activate with 1–3 gallons remaining, giving you 20–80 miles of warning depending on efficiency.
Whether you drive a compact sedan, a full-size SUV, or a pickup truck, accurate fuel tank range figures help you plan smarter and avoid costly surprises at the pump or dealership. Use this tool regularly to track changes over time and adjust your transportation budget accordingly.
Knowing your driving range helps you plan fuel stops, especially on road trips through remote areas. It's also useful for understanding how far you can go when the low fuel light comes on, and for comparing vehicles by practical range. Results update instantly as you adjust inputs, making it easy to explore different scenarios and find the best option for your driving needs and budget.
Range = Tank Size (gallons) × MPG
Result: 450 miles range
A 15-gallon tank at 30 MPG gives a range of 15 × 30 = 450 miles. With a 2-gallon reserve, you have 390 miles before the low fuel warning, and 60 miles of reserve.
Compact cars: 10–13 gal tank, 30–40 MPG = 300–500 miles. Mid-size sedans: 14–17 gal, 25–35 MPG = 380–550 miles. SUVs: 18–24 gal, 20–28 MPG = 400–580 miles. Trucks: 22–36 gal, 15–22 MPG = 380–650 miles. Hybrids: 10–14 gal, 45–58 MPG = 500–750 miles.
Never plan to use 100% of your range. Use 80% as a comfortable planning buffer: refuel every 80% of your range. This accounts for speed variations, detours, and finding a gas station. In remote areas (desert, mountains), reduce the buffer to 60–70%.
Highway driving is more fuel-efficient, extending range by 20–30% compared to city driving. A vehicle with 350 miles of city range might achieve 430–450 miles on the highway. Plan fuel stops accordingly for your route type.
Drive at moderate, steady speeds. Use cruise control. Avoid hard acceleration. Keep tires properly inflated. Remove unnecessary weight. Close windows at highway speed. These habits can extend your effective range by 10–20% beyond typical driving.
This provides the theoretical maximum range under ideal conditions. Real-world range is typically 80–90% of this due to traffic, speed variations, terrain, weather, and the fuel gauge not being perfectly linear. Use your actual tracked MPG for better accuracy.
Most vehicles have 1.5–3 gallons remaining when the low fuel light activates. At 30 MPG, that's 45–90 miles. However, this varies by vehicle. Check your owner's manual for the exact reserve amount — don't risk running out.
Your car's range-to-empty display uses recent driving patterns and current fuel level. It updates dynamically based on your driving style. This calculator gives a static estimate assuming consistent MPG throughout the entire tank.
Regularly running below 1/4 tank can damage the fuel pump, which stays cool by being submerged in fuel. It also risks picking up sediment from the tank bottom. Try to refuel when you hit 1/4 tank for best pump longevity.
Both matter equally in the formula (Range = Tank × MPG). But MPG is more variable — it changes with driving style, conditions, and maintenance. A 26-gallon truck at 18 MPG (468 mi) actually has more range than a 12-gallon car at 35 MPG (420 mi).
Most passenger vehicles have a range of 300–500 miles per tank. Fuel-efficient sedans with medium tanks cluster around 400–450 miles. Trucks with large tanks can exceed 500 miles. Hybrids often reach 500–600 miles on a tank.