Volts to Watts Conversion Calculator (V to W):
Enter the voltage (V), current (A) and power factor value in the below column respectively. After pressing the calculate button, you get the real power (W) in watts at the result column. Also by using the reset button, you can clear the existing values in the field.
While choosing three phase, you have to enter line to line voltage only.
DC volts to watts calculation formula:
DC watt can be calculated by the multiplication of the Amps and Volts.
P(W) = V(V) × I(A)
Power = Volts * Amps
Watt = Voltage * Current
Example:
Let’s take, an electric circuit current flow of 10 Amps and the applied voltage is 24 Volts. Calculate the DC power in watts?
Apply our formula,
Watt = 24 * 10 = 240 Watts.
Single Phase AC Volts to Watt calculation formula:
Single-phase power is the multiplication of voltage, current and power factor. Let we found the formula using the below relation.
Power = Current * voltage * power factor
Watt = Volts * Amps * pf
P(W) = V(V) × I(A) x pf
Look at this, the real power is directly proportional to the current, voltage and power factor. Real power is used to indicate the capacity of the particular equipment.
Example.
A single-phase motor takes 25 A at 230 volts and operating at 0.95 power factor.
Apply above formula,
P(W) = 230 × 25 x 0.95
P(W) = 5462.5 Watts
The motor power is 5462.5 Watts.
Three-phase AC volts to the watts calculation formula
We have two sets of three-phase watt formula based on the line to line and line to neutral voltage.
On line to Line voltage:
The power in watt (W) equal to root 3 times of multiplication of volts (V), Amps (A) and pf.
P(W) = √3 × PF × I(A) × VL-L(V)
The line to neutral voltage:
The power is three times of multiplication of current, voltage and power factor. Hence,
P(W) = 3 × PF × I(A) × VL-N(V)
Volts to Watt conversion chart:
Below table is prepared based on the different power factor of 0.96 and 0.86 to show the variation of how the power factor hits the motor rating.
Also for calculating watts, we have used single-phase formula only.
| S. No | AC (L-L)/ DC Volts | DC/AC Amps | Watt at 0.86 pf | W at 0.96 pf | DC Watt |
| 1 | 230 | 1.88 | 371 | 414 | 431.25 |
| 2 | 230 | 2.75 | 544 | 607 | 632.5 |
| 3 | 230 | 3.75 | 742 | 828 | 862.5 |
| 4 | 230 | 5.50 | 1088 | 1214 | 1265 |
| 5 | 230 | 9.25 | 1830 | 2042 | 2127.5 |
| 6 | 230 | 13.75 | 2720 | 3036 | 3162.5 |
| 7 | 230 | 18.75 | 3709 | 4140 | 4312.5 |
| 8 | 230 | 27.50 | 5440 | 6072 | 6325 |
| 9 | 230 | 37.50 | 7418 | 8280 | 8625 |
| 10 | 230 | 55.00 | 10879 | 12144 | 12650 |
| 11 | 230 | 92.50 | 18297 | 20424 | 21275 |
| 12 | 230 | 125.00 | 24725 | 27600 | 28750 |
| 13 | 230 | 187.50 | 37088 | 41400 | 43125 |
| 14 | 230 | 225.00 | 44505 | 49680 | 51750 |
| 15 | 230 | 275.00 | 54395 | 60720 | 63250 |
| 16 | 230 | 330.00 | 65274 | 72864 | 75900 |
| 17 | 230 | 375.00 | 74175 | 82800 | 86250 |
| 18 | 230 | 437.50 | 86538 | 96600 | 100625 |
| 19 | 230 | 550.00 | 108790 | 121440 | 126500 |
| 20 | 230 | 625.00 | 123625 | 138000 | 143750 |
| 21 | 230 | 700.00 | 138460 | 154560 | 161000 |
| 22 | 230 | 775.00 | 153295 | 171120 | 178250 |
| 23 | 230 | 875.00 | 173075 | 193200 | 201250 |
| 24 | 230 | 937.50 | 185438 | 207000 | 215625 |
| 25 | 230 | 1050.00 | 207690 | 231840 | 241500 |
