Amps to Watts at 120V Calculator
Convert amps to watts on a 120 volt supply. This assumes a resistive load with a power factor of 1, so for motors and other AC loads divide the…
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Convert amps to watts on a 120 volt supply. This assumes a resistive load with a power factor of 1, so for motors and other AC loads divide the power by the power factor as well.
Worked example
Example calculated from the starting values. Enter your own values and press Calculate to get your result.
With the default inputs (current = 5 A), the results are: power at 120 V 600.0 W.
Quick reference: current vs result
Reference table based on the example values; it is not your calculation result.
| Current (A) | Power at 120 V |
|---|---|
| 2.5 | 300.0 W |
| 5 | 600.0 W |
| 10 | 1,200.0 W |
| 25 | 3,000.0 W |
| 50 | 6,000.0 W |
| 100 | 12,000.0 W |
Frequently asked questions
What formula does this calculator use?
Power at 120 V = x × volts. Variables: x = current in A. Fixed values: volts = 120.
What do I need to enter?
You need current (A). Results update as you type.
What is an example result?
With the default inputs (current = 5 A), the results are: power at 120 V 600.0 W.
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