How to Convert VA to Watts

VA to Watts

How to convert apparent power in volt-amps (VA) to real power in watts (W).

VA to watts calculation formula

The real power P in watts (W) is equal to the apparent power S in volt-amps (VA), times the power factor PF:

P(W) =  S(VA) × PF

So watts are equal to volt-amps times the power factor.

watts = volt-amps × PF

or

W = VA × PF

Example:

What is the real power in watts when the apparent power is 650 VA and the power factor is 0.7?

Solution:

P = 650VA × 0.7 = 455W