kVA to kVAR Conversion Calculator

kVA to kVAR Calculator:

Enter the apparent power in kVA (kilovolt amp), power factor between 0 to 1, then press the calculate button to get the reactive power in kVAR (kilo Volt-Ampere reactive).

kVA to kVAR calculation

Reactive power Q_(kVAR) in kilovolt amp reactive is equal to apparent power S_(kVA) in kilovolt amp times of sine of power angle (φ). Hence for converting kVA to kVAR, the formula can be written as below,

Q_(kVAR) = S_(kVA) x sin (φ)

Or if you know the power factor means, you can convert the formula as below,

Q_(kVAR) = S_(kVA) x sin (cos^-1(pf))

kVAR = kVA x sin (cos^-1(pf))

Example:

Calculate the reactive power in kVAR of the 3.7kVA generator is operated at 0.8 pf.

kVAR = 3.7 x sin (cos^-1(0.8))

= 3.7 x sin (36.86989765)

= 3.7 x 0.6

= 2.2 kVAR

Hence the 3.7 kVA generator can supply 2.2 kVAR of reactive power at 0.8 pf.

kVA to kVAR Conversion Chart:

Loot at the table of kVA to kVAR Conversion chart of standard motor rating at 0.8 pf.