# Real and Reactive Power

Determine the actual power and volt-ampere reactive (VAR) for given voltage and current values. Suitable for both single phase and three-phase power systems.

Calculate the real power and reactive power using our online calculator. Determine the active power (real power) and reactive power (volt-ampere reactive or VAR) based on the given voltage and current values. This calculator works for both single-phase and three-phase power systems.

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### For Single Phase

t = v \times i \times \cos(p)

r = v \times i \times \sin(p)

### For Three Phase

t = \sqrt{3} \times v \times i \times \cos(p)

r = \sqrt{3} \times v \times i \times \sin(p)

**Where:**

- t = Real power
- r = Reactive power
- v = Voltage
- i = Current
- p = Phase Angle