Watts, VAR , VA (Active, Reactive, Apparent) Power Calculator

Apparent Power in an AC circuit is the resultant of the active and reactive powers. In complex number, S = P + j Q. Where the S is the apparent power, P is active power and the Q is reactive power.

Active Power or True power, P  = V x I CosΦ W

Reactive Power, Q = V x I SinΦ VAR

Apparent Power, S  = V x I VA