Calculate the minimum generator size needed in kilowatts based on the total load, power factor, and motor startup multiplier. Helps select a generator that handles both running and starting loads.
Enter your values below
Use 1.5 for resistive loads, 2.5–3 for motor loads, up to 5 for large motors
How this calculator works
Multiplies the running load by the startup multiplier to account for inrush current, then divides by the power factor to determine the required generator capacity.
Common questions about this calculator
