Convert reactive power into useful real power estimates. Check phase angle, kVA, and efficiency quickly. Improve electrical planning with clear outputs, graphs, and exports.
Use power factor or phase angle to convert reactive power into real power. The input area uses 3 columns on large screens, 2 on medium, and 1 on mobile.
Important: kVAR cannot be converted to kW from kVAR alone. You must also know power factor or phase angle.
The sample rows below show how the converter behaves with different reactive power levels and operating conditions.
| Reactive Power (kVAR) | Power Factor | Phase Angle (°) | Real Power (kW) | Apparent Power (kVA) | Load Type |
|---|---|---|---|---|---|
| 25.00 | 0.8000 | 36.8699 | 33.3333 | 41.6667 | Lagging |
| 40.00 | 0.9000 | 25.8419 | 82.5898 | 91.7664 | Lagging |
| 60.00 | 0.7071 | 45.0000 | 60.0000 | 84.8528 | Leading |
| 90.00 | 0.9500 | 18.1949 | 273.7891 | 288.1991 | Lagging |
These formulas come from the power triangle. Real power is horizontal, reactive power is vertical, and apparent power is the hypotenuse.
No. You need one more piece of information, usually power factor or phase angle. Without that, the real power value is not uniquely defined.
Power factor defines the relationship between real, reactive, and apparent power. It gives the angle of the power triangle, which is required for the conversion.
Lagging loads are usually inductive, like motors and transformers. Leading loads are usually capacitive. The type describes reactive direction, while magnitude drives the numerical conversion.
For a fixed kVAR value, a very small phase angle means the real component becomes much larger. That is why the curve becomes steep as power factor approaches 1.
Usually, no. Power factor correction mainly reduces reactive demand and apparent power. The useful real power of the same load generally stays about the same.
Use whichever value you already know. Many electrical systems report power factor directly. Some studies and test reports provide phase angle instead.
kVA represents total apparent power. It helps you size transformers, generators, feeders, and switchgear because equipment ratings often depend on apparent power, not only kW.
They are accurate for steady-state power triangle calculations. Real installations may also involve harmonics, nonlinear loads, unbalance, and measurement tolerances.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.