kW to kVA Calculator
Enter real power and a decimal power factor to calculate the corresponding apparent power locally.
Enter finite non-negative real power and a power factor greater than 0 and at most 1.
Result
A QUICK WALKTHROUGH
How to use this tool
- Enter real power in kW.
- Enter power factor as a decimal from 0 to 1.
- Calculate to see apparent power in kVA.
Formula
Apparent power S (kVA) = real power P (kW) ÷ power factor. kW and kVA are different quantities; they are equal only when PF is 1.
Power factor input
Enter a decimal from 0 to 1, such as 0.8 for 80%. Zero cannot be used because division would be undefined.
Local calculation
Values are processed in your browser and are not uploaded. This is a calculation aid, not equipment sizing or electrical safety advice.
GOOD TO KNOW
Common questions
Can I enter 80 for 80%?
No. Enter 0.8 as a decimal power factor.
Are kW and kVA interchangeable?
No. kVA is apparent power and kW is real power; the power factor relates them.