Reactive Energy Converter

Reactive power (measured in VAR, kVAR, or MVAR) is the power that oscillates between the source and load in AC systems, while active power (measured in Watts) is the actual power consumed. Reactive power doesn’t perform useful work but is necessary for maintaining voltage levels and enabling the operation of inductive loads like motors and transformers. Our tool helps you convert between different units of reactive power and energy.

Our Reactive Energy Converter processes your input values using standard electrical formulas. For unit conversion, it multiplies/divides by conversion factors (1 kVAR = 1000 VAR, 1 MVAR = 1000 kVAR). For reactive power calculation, it uses Q = √3 × V × I × sin(φ) for three-phase systems or Q = V × I × sin(φ) for single-phase systems, where φ is the phase angle derived from the power factor.

VAR (Volt-Ampere Reactive) is the base unit of reactive power. kVAR (kilovolt-ampere reactive) equals 1,000 VAR, and MVAR (megavolt-ampere reactive) equals 1,000,000 VAR. These units measure the reactive component of power in electrical systems. Our converter allows easy conversion between these units for various applications in power system analysis.

To calculate reactive power (Q) from voltage (V), current (I), and power factor (PF), first find the phase angle: φ = cos⁻¹(PF). Then calculate Q = V × I × sin(φ) for single-phase systems, or Q = √3 × V × I × sin(φ) for three-phase systems. Our tool automates this calculation – just input your values and select single or three-phase configuration.

Power factor (PF) is the ratio of active power to apparent power, ranging from 0 to 1. A lower PF indicates more reactive power in the system. When PF = 1, all power is active; when PF = 0, all power is reactive. Industrial facilities often use capacitor banks to improve power factor by supplying reactive power locally, reducing the reactive power drawn from the grid.

Yes, our tool supports both single-phase and three-phase systems. Simply select your system type in the “Reactive Power from V, I & Power Factor” calculator. For three-phase systems, ensure you’re using line voltage and line current values. The tool automatically applies the correct formula (including the √3 factor for three-phase calculations).

Yes, your data is completely secure. All calculations happen locally in your browser – your electrical data never leaves your computer or gets sent to any server. This ensures complete privacy and security for your electrical system parameters. We don’t store or have access to any values you process with our tool.

To convert from VAR·h to kVAR·h, divide the value by 1,000. For example, 5,000 VAR·h = 5 kVAR·h. Our converter automates this process – simply enter your value, select “VAR·h” as the “From” unit and “kVAR·h” as the “To” unit, then click “Convert”. The tool handles all unit conversions instantly.

Reactive power compensation is crucial because excessive reactive power flow causes higher line currents, increased losses, voltage drops, and reduced system capacity. By installing capacitors or other compensation devices near inductive loads, facilities can provide reactive power locally, improving power factor and reducing the burden on the electrical distribution system.

Yes, our Reactive Energy Converter is completely free to use with no hidden costs or limitations. You can perform unlimited conversions and calculations without any registration or payment requirements. We’re committed to providing free, useful tools for electrical engineers, technicians, and students.