Generator Wattage Calculator

Check off what you’d actually run at the same time. The panel totals your load and shows what size generator handles it — typical watt values are already loaded, so just tap and go.

Quick start:
Your numbers
Running watts
0
Starting watts
0
Tap a preset or check appliances — your size shows here.
Typical values pre-loaded — the appliance nameplate or a watt meter gives exact draw. Nothing you enter leaves your browser.

Add your own appliance

Watts are on the appliance data plate. If it only lists amps: watts = amps × volts.

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