FuelFillX

FuelFillX makes it simple to calculate exactly how much fuel you need to add.
Enter your current fuel (liters) and the target fuel level (liters), tap CALCULATE FILL, and get the precise amount to add—no more mental math at the pump!

Features:
• Simple input: Current & target fuel
• Accurate & fast: See exact fuel to top off
• Copy/share: Send the result easily
• Clean UI: Answers in an instant
• Input checks: No negative or invalid numbers
• Quick reset: Plan your next refuel in a tap

Tank full, mind clear—FuelFillX handles the numbers for you!