Generator Sizing Calculator
Calculate the right generator wattage for your power needs.
Essential Appliances
High-Power Appliances
Other Appliances
Lights & Electronics
Recommended Generator Size
3,500W
portable generator
Power Requirements
Running Watts850W
Starting Watts1,200W
Recommended (w/ 20%)1,440W
Load Breakdown
Major Appliances1 items
Lighting Load300W
Electronics Load400W
Fuel Estimates (50% Load)
Gas per Hour~0.72 gal
Runtime (5 gal tank)~6.9 hrs
Runtime (8 gal tank)~11.1 hrs
Safety Tips:
- Never run generators indoors or in enclosed spaces
- Keep at least 20 feet from windows and doors
- Use proper extension cords rated for outdoor use
- Consider a transfer switch for safe home connection