Real and Reactive Power Formula

The real and reactive power formula for calculating the active and reactive power is given below. From this reactive power formula, the calculation of real and reactive power is different for single phase and three phase powers. From this active power formula for single phase, real power is the product of voltage, ampere and the cosecant of the phase angle, whereas the reactive power is the product of voltage, ampere, and sine of the phase angle.

Active Power Formula

Formula:

For Single Phase
t = v × i × cos(p)
r = v × i × sin(p)

For Three Phase
t = √3 × v × i × cos(p)
r = √3 × v × i × sin(p)


Where,

t = Real power
r = Reactive power
v = Voltage
i = Current
p = Phase Angle

Related Calculator:

Feel free to use this real and reactive power formula to do the power calculations on your own. Just submit the values in the power formula and do the operations to get the results.


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