Wattage Calculator
For DC or resistive AC, watts = volts × amps. For AC with a power factor, P = V × I × PF. Use this to check if a supply can run a load.
Power960 W
Kilowatts0.96 kW
Educational use only.
Formula
P = V × I × PF.
How to use this calculator
- Enter volts and amps.
- Set power factor to 1 unless you know otherwise.
- Read watts and kW.
Examples
120 V × 8 A
960 W (0.96 kW) at PF 1.
FAQ
What is power factor?+
It is 1 for heaters. Motors can be lower, which reduces real watts for the same current.
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