kVA to kW Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the kVA and the power factor.
- Read the real power in kW.
How it works
kW = kVA × power factor.
Worked example
10 kVA at 0.8 PF. = 8 kW.
Common mistakes
- Assuming kVA equals kW — only true at a power factor of 1.
- Using a power factor above 1 (it can't exceed 1).
Frequently asked questions
Why are generators rated in kVA?
kVA is the apparent power the alternator must supply; the useful work done is kW, which depends on the load's power factor.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.