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DC Amps to Watts calculation The power P in watts (W) is equal to the current I in amps (A), times the voltage V in volts (V): P(W) = I(A) / V(V) |
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AC Single Phase Amps to Watts calculation The power P in watts (W) is equal to the power factor PF times the phase current I in amps (A) times the RMS voltage V in volts (V): P(W) = PF * I(A) * V(V) |
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AC Three Phase Amps to Watts calculation Calculation with line to line voltage The power P in watts (W) is equal to the square root of 3 times the power factor PF times the phase current I in amps (A), times the line to line RMS voltage VL-L in volts (V): P(W) = √3 * PF * I(A) * VL-L(V) Calculation with line to neutral voltage The power P in watts (W) is equal to 3 times the power factor PF times the phase current I in amps (A), times the line to neutral RMS voltage VL-N in volts (V): P(W) = 3 * PF * I(A) * VL-N(V) |
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Common power factor values NOTE: It is NOT recommended to use common power factor values for accurate results.
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