With this tool you can calculate and convert in 1 only step from Watts to volts easily and for free.
You will also find the formula used to convert watts to volts, how to convert watts to volts, some illustrated examples and a table with the main conversions from watts to volts, with the most common power factor values in different constructions, appliances and motors.
Formula to convert, calculate and transform from watts to volts, single-phase, two-phase and three-phase:
- W DC = Watts DC.
- W 1Ø = Watts 1 monophasic.
- W 2Ø = Watts 2 biphasic.
- W 3Ø = Watts 3 three-phase.
- V L-N = Volts line-neutral.
- V L-L = Volts line-line.
- I AC1Ø = Current / monophase Amps.
- I AC2Ø = Current / Biphasic Amps.
- I AC3Ø = Current / Three- phase Amps.
- FP = Power factor.
How to convert from watts to volts in 1 only step:
Step 1:
In order to perform this conversion you must have the following variables: Current, power factor, and watts. It is easy to divide the watts between the multiplication of the current, the power factor and the root of three, this for the case of three-phase powers. By example: A coffee machine has a power of 3400watts, an amperage of 11,15amp and a power factor of 0.8, which you must do by dividing 3400watt between the multiplication of √3 × 11,15 × 0,8, According to the following formula: 3400 / (√3 × 11.15 × 0.8), the result will be: 220 Volts.
Examples of conversions from watts to volts:
Example 1:
A monofasico sound equipment has a power of 400watts, with a power factor of 0.93, an amperage of 3.58Amp, the only thing you should do is divide the watts by multiplying the rest of the variables as follows: 400 / (3.58 × 0.93) = 120Volt.
Example 2:
A biphasic ceiling fan has a power of 830Watts, with a power factor of 0.91 and an amperage of 3.8Amp, to find the voltage it should be divided 830 between the multiplication of 2 × 0.91 × 3.8, which will result in: 120Volts.
Example 3:
A three-phase industrial washing machine has a power of 2450watts, a power factor of 0.78 and an amperage of 8.24Ampere, to know the voltage you should divide 2450 / (√3 × 8.24 × 0.78) = 220volts.
Watts to volts, table, equivalence, transformation (Amperes = 10Amp, Fp = 0.8, AC, 3F):
| How many Watts are: | Equivalence in Volts |
| 100 Watts | Equivalent to 7.22 Volts |
| 200 Watts | 14.43 Volts |
| 300 Watts | 21.65 Volts |
| 400 Watts | 28.87 Volts |
| 500 Watts | 36.08 Volts |
| 600 Watts | 43.30 Volts |
| 700 Watts | 50.52 Volts |
| 800 Watts | 57,74 Volts |
| 900 Watts | 64.95 Volts |
| 1000 Watts | 72.17 Volts |
| 2000 Watts | 144.34 Volts |
| 3000 Watts | 216.51 Volts |
| 4000 Watts | 288.68 Volts |
| 5000 Watts | 360.84 Volts |
| 6000 Watts | 433.01 Volts |
| 7000 Watts | 505.18 Volts |
| 8000 Watts | 577.35 Volts |
| 9000 Watts | 649.52 Volts |
| 10000 Watts | 721.69 Volts |
| 20000 Watts | 1443.38 Volts |
| 30000 Watts | 2165.06 Volts |
| 40000 Watts | 2886.75 Volts |
| 50000 Watts | 3608.44 Volts |
| 60000 Watts | 4330.13 Volts |
| 70000 Watts | 5051.81 Volts |
| 80000 Watts | 5773.50 Volts |
| 90000 Watts | 6495.19 Volts |
Note: The previous conversions take into account a power factor of 0.8, an amperage of 10 Amp and a three-phase AC power. For different variables you should use the calculator that appears at the beginning.
Typical power factor for engines, constructions and appliances.
Typical Un-improved Power Factor by Industry:
| Industry | Power Factor |
| Auto Parts | 0.75-0.80 |
| Brewery | 0.75-0.80 |
| Cement | 0.80-0.85 |
| Chemical | 0.65-0.75 |
| Coal Mine | 0.65-0.80 |
| Clothing | 0.35-0.60 |
| Electroplating | 0.65-0.70 |
| Foundry | 0.75-0.80 |
| Forging | 0.70-0.80 |
| Hospital | 0.75-0.80 |
| Machine Manufacturing | 0.60-0.65 |
| Metalworking | 0.65-0.70 |
| Office Building | 0.80-0.90 |
| Oil field Pumping | 0.40-0.60 |
| Paint Manufacturing | 0.65-0.70 |
| Plastic | 0.75-0.80 |
| Stamping | 0.60-0.70 |
| Steel Works | 0.65-0.80 |
| Tool, dies, jigs industry | 0.65-0.75 |
Typical power factor of common household electronics:
| Electronics device | Power Factor |
| Magnavox Projection TV – standby | 0,37 |
| Samsung 70″ 3D Bluray | 0,48 |
| Digital Picture Frame | 0,52 |
| ViewSonic Monitor | 0,5 |
| Dell Monitor | 0,55 |
| Magnavox Projection TV | 0,58 |
| Digital Picture Frame | 0,6 |
| Digital Picture Frame | 0,62 |
| Digital Picture Frame | 0,65 |
| Philips 52″ Projection TV | 0,65 |
| Wii | 0,7 |
| Digital Picture Frame | 0,73 |
| Xbox Kinect | 0,75 |
| Xbox 360 | 0,78 |
| Microwave | 0,9 |
| Sharp Aquos 3D TV | 0,95 |
| PS3 Move | 0,98 |
| Playstation 3 | 0,99 |
| Element 41″ Plasma TV | 0,99 |
| Current large, flat-screen television | 0,96 |
| Windows-mount air conditioner | 0,9 |
| Legacy CRT-Based color television | 0,7 |
| Legacy flat panel computer monitor | 0,64 |
| While-LED lighting fixture | 0,61 |
| Legacy laptop power adapter | 0,55 |
| Laser Printer | 0,5 |
| Incandescent lamps | 1 |
| Fluorescent lamps (uncompensated) | 0,5 |
| Fluorescent lamps (compensated) | 0,93 |
| Discharge lamps | 0,4-0,6 |
Typical Motor Power Factors:
| Power | Speed | Power Factor | ||
| (hp) | (rpm) | 1/2 load | 3/4 load | full load |
| 0 – 5 | 1800 | 0.72 | 0.82 | 0.84 |
| 5 – 20 | 1800 | 0.74 | 0.84 | 0.86 |
| 20 – 100 | 1800 | 0.79 | 0.86 | 0.89 |
| 100 – 300 | 1800 | 0.81 | 0.88 | 0.91 |
Reference // Power Factor in Electrical Energy Management-A. Bhatia, B.E.-2012
Power Factor Requirements for Electronic Loads in California- Brian Fortenbery,2014
http://www.engineeringtoolbox.com
How to use the watt-to-volt calculator:
Initially you must have the watts you want to convert and the amps and power factor, with that in mind you must go to the initial table and choose the type of current you want AC or DC and the number of phases in case of choosing AC, then you must enter the data shown on the left side of the tool, it is important to check what is requested in the table because according to the requirement you must enter watts 1F, 2F, 3F, then you must enter the factor of power and finally the amperage.
Rating calculator from Watts to Volts: