Three Phase Power Calculator
kW, kVA and current for 3-phase loads.
Enter your values
Enter the line voltage in V.
Enter the line current in A.
Enter the power factor you are working with.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Real power
- 18.84 kW
- Apparent power
- 22.17 kVA
- Reactive power
- 11.68 kVAr
- Current per phase
- 32 A
Quick answer
Three phase power equals √3 times line voltage, line current and power factor.
P = √3 × V × I × PF
At a glance
| What it does | kW, kVA and current for 3-phase loads. |
|---|---|
| Category | Engineering |
| Inputs needed | Line voltage, Line current, Power factor |
| Main output | Real power |
| Formula | P = √3 × V × I × PF |
| Cost | Free — no sign-up, no download |
How to use the Three Phase Power Calculator
- 1Enter line-to-line voltage.
- 2Enter line current.
- 3Enter the load power factor.
Inputs explained
- Line voltage(V)
- Enter the line voltage in V.
- Line current(A)
- Enter the line current in A.
- Power factor
- Enter the power factor you are working with.
Worked example
Using the values the calculator loads with:
Inputs
- Line voltage400 V
- Line current32 A
- Power factor0.85
Results
- Real power18.84 kW
- Apparent power22.17 kVA
- Reactive power11.68 kVAr
- Current per phase32 A
Frequently asked questions
Why does power factor matter?
Low PF means you draw more current for the same useful power.
Is 400 V standard?
Yes in most of Europe; 208 V or 480 V in North America.
What do I need to enter into the Three Phase Power Calculator?
Just 3 values: line voltage, line current, power factor. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Three Phase Power Calculator work out the answer?
Three phase power equals √3 times line voltage, line current and power factor. It applies the formula P = √3 × V × I × PF and shows the working so you can check each step by hand.
Is the Three Phase Power Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.