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Example of Watts to VA Calculations
To convert watts (W) to volt-amperes (VA), you need to know the power factor (PF) of the load. The formula to convert watts to VA is:
VA=Watts/Power Factor
Assuming a common power factor of 0.8 for these calculations.
Table of Watts to VA Conversions
Below is a table showing the conversion of various watts values to VA, sorted from smallest to largest, assuming a power factor of 0.8.
| Watts (W) | Power Factor (PF) | VA | Watts (W) | Power Factor (PF) | VA |
|---|---|---|---|---|---|
| 100 | 0.8 | 125 | 200 | 0.8 | 250 |
| 300 | 0.8 | 375 | 400 | 0.8 | 500 |
| 500 | 0.8 | 625 | 600 | 0.8 | 750 |
| 700 | 0.8 | 875 | 800 | 0.8 | 1000 |
| 900 | 0.8 | 1125 | 1000 | 0.8 | 1250 |
| 1100 | 0.8 | 1375 | 1200 | 0.8 | 1500 |
| 1300 | 0.8 | 1625 | 1400 | 0.8 | 1750 |
| 1500 | 0.8 | 1875 | 1600 | 0.8 | 2000 |
| 1700 | 0.8 | 2125 | 1800 | 0.8 | 2250 |
| 1900 | 0.8 | 2375 | 2000 | 0.8 | 2500 |
| 2200 | 0.8 | 2750 | 2500 | 0.8 | 3125 |
| 3000 | 0.8 | 3750 |
Convert 100 Watts to VA
To convert 100 watts to VA at a power factor of 0.8:
VA=100/0.8=125 VA
Convert 1000 Watts to VA
To convert 1000 watts to VA at a power factor of 0.8:
VA=1000/0.8=1250 VA
Convert 1500 Watts to VA
To convert 1500 watts to VA at a power factor of 0.8:
VA=1500/0.8=1875 VA
What Is a VA?
A volt-ampere (VA) is a unit of apparent power in an electrical circuit. It represents the product of the root mean square (RMS) voltage and RMS current. Unlike watts, which measure real power, VA measures apparent power, which includes both real power and reactive power. Apparent power is the combination of both real power (which does actual work) and reactive power (which only sustains the electric and magnetic fields in the circuit).