About this amps to watts calculator
Power = voltage × current for DC: 10 A × 120 V = 1,200 W. For AC multiply by the power factor (1 for heaters, about 0.8-0.95 for motors). Three-phase adds √3 and uses line-to-line voltage: P = √3 × V × I × PF.
A → W
Amps to Watts Calculator
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How to use Amps to Watts Calculator
What the tool does, how to run it, and what to expect from the result.
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Who Amps to Watts Calculator is for
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Students, lab workers, electricians and engineers who want the formula and the answer.
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Using the amps to watts calculator without installing anything or signing up.
FAQ
Common questions
Short answers for the questions people usually have before trying a utility like this.
How many watts can a 15 amp circuit handle?
15 A × 120 V = 1,800 W, but continuous loads should stay under 80%, about 1,440 W.
What is power factor?
The share of current that does real work. Resistive loads are 1; motors and power supplies are lower.
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