kVA to Watts Calculator
Convert apparent power in kilovolt-amps (kVA) to real power in watts (W) using power factor.
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W
Formula: W = kVA × PF × 1,000
How to convert kVA to Watts
The formula is Watts = kVA × Power Factor × 1,000.
For example, a generator rated at 10 kVA with a power factor of 0.8 provides exactly 8000 W of real power. This determines the actual working power available to your appliances.
Common kVA to Watts Conversions (0.8 PF)
| kVA | Power Factor | Watts (W) |
|---|---|---|
| 1 kVA | 0.8 | 800 W |
| 5 kVA | 0.8 | 4000 W |
| 10 kVA | 0.8 | 8000 W |
| 25 kVA | 0.8 | 20000 W |
| 50 kVA | 0.8 | 40000 W |
Frequently Asked Questions
What is power factor?
Power factor is the ratio of real power (W) to apparent power (VA). A typical value for generators and inductive loads is 0.8.
Why is a 10 kVA generator not 10,000 W?
Because of inefficiency and reactive power in alternating current circuits, represented by the power factor. At 0.8 PF, 10 kVA yields 8000 watts.
Does power factor apply to DC circuits?
No, in DC circuits the power factor is always 1, so kVA and kW are equal.