Generator Size Calculator
What Size Generator Do I Need?
Pick a generator size, check what you want running during an outage, and see if it fits.
Generator size
Peak / starting watts
Running watts
What do you want to run?
Lights× 15W
Running load: 0WLimit 3,800W
Peak on startup: 0WLimit 5,000W
Pick a few items to get started.
Estimates based on typical appliance draw. Check the label on your own appliances for exact wattage.
Not sure?
Tell us what you want running and we will size it with you.
Call or text (314) 833-8000