GenFuel
Generator Fuel Calculator
When the power goes out, guessing is not an option.
GenFuel helps you calculate exactly how much fuel you need — and how long your generator will run.
Plan fuel. Know runtime. Stay prepared.
When the power goes out, guessing is not an option.
GenFuel helps you calculate exactly how much fuel you need — and how long your generator will run.
No spreadsheets. No complex setup.
Just fast, reliable numbers.
Fuel Needed
Enter your generator’s consumption and required runtime.
GenFuel instantly shows:
- Fuel volume required
- Total fuel cost
Know the exact amount before you refuel.
Runtime
Already have fuel?
Switch to Runtime mode and see how long your generator will run based on available liters and consumption rate.
Stay in control. Avoid surprises.
Smart Consumption Guide
Not sure about fuel consumption?
GenFuel includes typical rates for common gasoline and diesel generators, so you can start with realistic values.
Designed for real-world use.
Built for Simplicity
- Fast input with steppers and smart adjustments
- Region-based default fuel price
- All major world currencies supported
- Light and Dark mode
- Works on iPhone and iPad
Everything updates instantly.
No “Calculate” button required.
Intelligent Defaults
On first launch, GenFuel detects your region and sets an approximate local fuel price — so you start with realistic numbers.
You’re always free to adjust it.
