Kalkulátor Ampéry na Watty

Electric current in amps (A) to electric power in watts (W) calculator.

Select current type: DCAC - Single phaseAC - Three phase Enter current in amps : mAAkA Select voltage type Line to line voltageLine to neutral voltage Enter voltage in volts mVVkV Enter power factor Calculate Reset Swap

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Power result in watts						W
Power result in kilowatts						kW
Power result in milliwatts						mW

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)

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)

AC three phase amps to watts calculation

Calculation with line to line voltage

The power P in watts (W) is equal to square root of 3 times the power factor PF times the phase current I in amps (A), times the line to line RMS voltage V_L-L in volts (V):

P_(W) = √3 × PF × I_(A) × V_L-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 V_L-N in volts (V):

P_(W) = 3 × PF × I_(A) × V_L-N(V)

Typical power factor values

Do not use typical power factor values for accurate calculations.