kW to Volts Calculator
Enter real power, current, phase count, and power factor to calculate voltage using the appropriate single or three-phase formula.
Choose the circuit phase and enter real power, measured RMS current, and power factor. kW alone cannot determine voltage.
Single phase: V = 1000 × P ÷ (I × PF) · Three phase: VLL = 1000 × P ÷ (√3 × I × PF)
Voltage
A QUICK WALKTHROUGH
How to use this tool
- Enter real power in kW and RMS current.
- Choose single phase or three phase and enter a power factor greater than 0 and at most 1.
- Calculate and review the voltage result.
Formula and boundary
Single phase uses V = 1000P ÷ (I × PF). Three phase uses VLL = 1000P ÷ (√3 × I × PF). Power, current, phase, and power factor are required; kW alone cannot determine voltage.
Local estimate
This browser-only calculator uses the RMS current you enter. It does not measure a circuit or provide electrical safety or engineering sign-off.
GOOD TO KNOW
Common questions
Can I calculate volts from kW alone?
No. You also need current, phase configuration, and power factor.
Should power factor be 80 or 0.8?
Enter 0.8 for 80%. The field accepts a decimal greater than 0 and at most 1.
What voltage is used for three phase?
The result is line-to-line voltage (VLL).