Engineering tool
Three-phase power calculator
Calculate kW, kVA or current for a balanced three-phase system using line-to-line voltage.
Definitions and assumptions
- Voltage
- Line-to-line RMS voltage in volts.
- Current
- Line current in amperes.
- Power factor
- Real power divided by apparent power, entered as a decimal from greater than 0 to 1.
- Efficiency
- Output divided by input, entered as a decimal. Use 1 when estimating electrical input power without an efficiency adjustment.
- kW
- Real power.
- kVA
- Apparent power.
Planning calculation only. Verify results against the actual wiring configuration, phase balance, manufacturer data, ratings and approved engineering calculations.