Ensure you have the right generator with our free Generator Wattage Calculator. Accurately calculate the total running watts and peak starting watts needed for your home, RV, or job site appliances. Avoid overloads and downtime by understanding your precise power requirements before you buy. Easily account for all your critical devices and tools.
Formula:
Required Running Watts = Sum of (Appliance Running Watts × Quantity)
Required Starting (Surge) Watts = Required Running Watts + Max (Single Appliance Starting Watts - Single Appliance Running Watts)
Where:
- Running Watts: The continuous power an appliance uses.
- Starting Watts: The extra surge of power some appliances (especially with motors) need when they first turn on.
- Quantity: Number of identical appliances running simultaneously.