VA to watts Conversion Calculator:
Power factor times of apparent power is equal to real power. Let us consider power factor is cos pi, apparent power S in VA and real power P in Watt, by using the above relation,
P(W) = S(VA) × cos pi
Real power = apparent power * power factor.
Unit wise
Watt = VA * pf
Example:
A turbo alternator is operating at 5000 VA at unity power factor. Calculate the real power in Watt supply through the alternator.
Apply our formula,
P(W) = 5000 * 1
Real power = 5000 Watts
Hence at unity power factor, the real power is equal to the apparent power.
VA to Watt conversion chart:
In below table, you can find out the standard VA rating of the motor and their real power at different power factor. While increasing the power factor, we can increase the real power (rating) of the equipment.
Note: It is applicable for only AC circuits.
| S. No | VA | pf | Watt at 0.86 pf | W at 0.96 pf | |
| 1 | 872.09 | 0.96 | 0.86 | 750 | 837.21 |
| 2 | 1279.07 | 0.96 | 0.86 | 1100 | 1227.91 |
| 3 | 1744.19 | 0.96 | 0.86 | 1500 | 1674.42 |
| 4 | 2558.14 | 0.96 | 0.86 | 2200 | 2455.81 |
| 5 | 4302.33 | 0.96 | 0.86 | 3700 | 4130.23 |
| 6 | 6395.35 | 0.96 | 0.86 | 5500 | 6139.53 |
| 7 | 8720.93 | 0.96 | 0.86 | 7500 | 8372.09 |
| 8 | 12790.70 | 0.96 | 0.86 | 11000 | 12279.07 |
| 9 | 17441.86 | 0.96 | 0.86 | 15000 | 16744.19 |
| 10 | 25581.40 | 0.96 | 0.86 | 22000 | 24558.14 |
| 11 | 43023.26 | 0.96 | 0.86 | 37000 | 41302.33 |
| 12 | 58139.53 | 0.96 | 0.86 | 50000 | 55813.95 |
| 13 | 87209.30 | 0.96 | 0.86 | 75000 | 83720.93 |
| 14 | 104651.16 | 0.96 | 0.86 | 90000 | 100465.12 |
| 15 | 127906.98 | 0.96 | 0.86 | 110000 | 122790.70 |
| 16 | 153488.37 | 0.96 | 0.86 | 132000 | 147348.84 |
| 17 | 174418.60 | 0.96 | 0.86 | 150000 | 167441.86 |
| 18 | 203488.37 | 0.96 | 0.86 | 175000 | 195348.84 |
| 19 | 255813.95 | 0.96 | 0.86 | 220000 | 245581.40 |
| 20 | 290697.67 | 0.96 | 0.86 | 250000 | 279069.77 |
| 21 | 325581.40 | 0.96 | 0.86 | 280000 | 312558.14 |
| 22 | 360465.12 | 0.96 | 0.86 | 310000 | 346046.51 |
| 23 | 406976.74 | 0.96 | 0.86 | 350000 | 390697.67 |
| 24 | 436046.51 | 0.96 | 0.86 | 375000 | 418604.65 |
| 25 | 488372.09 | 0.96 | 0.86 | 420000 | 468837.21 |