Fuel Tank Range Calculator
Calculate how far you can drive on your current fuel level based on tank size, vehicle MPG, and fuel percentage remaining.
Driving Range
400 miles
Range (km)
644 km
Usable Fuel
16.0 gal
Full Tank Range
400 mi
💡 How to Use the Fuel Tank Range Calculator
How to Calculate Driving Range
Knowing your driving range helps prevent running out of fuel and plan stops on road trips.
Range = Tank Size × (Fuel Level ÷ 100) × MPG
Example: 16-gallon tank at 50% fuel in a 25 MPG car: 16 × 0.50 × 25 = 200 miles
Average Tank Sizes by Vehicle Type
| Vehicle Type | Tank (gal) | Full Range (25 MPG) |
|---|---|---|
| Compact Car | 12–14 | 300–350 mi |
| Midsize Sedan | 14–17 | 350–425 mi |
| SUV | 18–24 | 360–480 mi |
| Full-Size Truck | 26–36 | 400–540 mi |
When to Fill Up
Most fuel gauges become inaccurate below ¼ tank. Running very low can also damage the fuel pump (which uses fuel for cooling) and suck up sediment from the tank bottom. Best practice: fill up at ¼ tank.