Amps to watts
Amps to watts: use current, voltage, power factor. Review the formula, worked example and calculation steps.
Inputs
Use the units shown—
Enter your values and select Calculate.
Formula & explanation
P = V × I × power factor × phase multiplier
Variables & units
- Current
- A · minimum 0, maximum 1000000000000
- Voltage
- V · minimum 0.000001, maximum 1000000000000
- Power factor
- ratio · minimum 0.000001, maximum 1
- Circuit
- Select an option
Worked example
Change the supplied example values to match your circuit.
Assumptions
Ideal steady-state calculation. Three-phase uses balanced loads and line-to-line RMS voltage.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
Practice with an example
Use the default input values to find the answer. The reset icon restores those values.
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