Generator Fuel Calculator

GenFuel

Get GenFuel on AppStore
GenFuel generator fuel calculator app icon
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.
Company Name

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.

fuel needed calculator interface showing generator consumption and runtime
runtime calculator interface showing available fuel and estimated hours

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.

simple generator fuel calculator interface with clean input fields

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.

Download GenFuel

Be ready before you start your generator.

Get GenFuel on AppStore

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