Three Phase Voltage Calculator
Calculate three-phase line voltage from power, current, and power factor (V = P ÷ (√3 × I × PF)).
Formula
V = P ÷ (√3 × I × PF)
- V
- Line-to-line voltage, in volts
- P
- Real power, in watts
- I
- Line current, in amps
- PF
- Power factor, between 0 and 1
What this calculator does
Calculates the line-to-line voltage of a balanced three-phase circuit from power, current, and power factor.
Use cases
- Back-calculate expected supply voltage for a known three-phase load
- Verify a measured line voltage against a load's power and current rating
- Troubleshoot a three-phase circuit by comparing expected vs. measured voltage