Compute the adequate power and volt-ampere reactive (VAR) using provided voltage and current values. Applicable for both single-phase and three-phase power systems.
Utilize our online calculator to calculate real power and reactive power. Determine active power (real power) and reactive power (volt-ampere reactive or VAR) based on the provided voltage and current values. This calculator is applicable for both single-phase and three-phase power systems.
Real and Reactive Power formula
For Single Phase
![\[t = v \times i \times \cos(p)\]](https://x-calculator.com/wp-content/ql-cache/quicklatex.com-c7eee45222a34a233a1482a436b89166_l3.png "Rendered by QuickLaTeX.com")
![\[r = v \times i \times \sin(p)\]](https://x-calculator.com/wp-content/ql-cache/quicklatex.com-a3599bcf9370876b531f066c166167d1_l3.png "Rendered by QuickLaTeX.com")
For Three Phase
![\[t = \sqrt{3} \times v \times i \times \cos(p)\]](https://x-calculator.com/wp-content/ql-cache/quicklatex.com-bca459e8475504509c00031580ce30ce_l3.png "Rendered by QuickLaTeX.com")
![\[r = \sqrt{3} \times v \times i \times \sin(p)\]](https://x-calculator.com/wp-content/ql-cache/quicklatex.com-cd1d9a1fe97657260673b8ce8437c74c_l3.png "Rendered by QuickLaTeX.com")
Where:
- t = Real power
- r = Reactive power
- v = Voltage
- i = Current
- p = Phase Angle
