Watts to Volts Calculation  Online Electrical Calculators
Watts (W) to Volts (V) Conversion Calculator.
Enter the Real Power (P) in Watts (W), Current (I) in amps (A), and press the calculate button to get the Voltage (V) in volts (V):
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Note, For higher values like 5×10^{3}, 10×10^{6}, 1.6 x10^{12}, enter the value like this for scientific notation as 5e3, 10e6, 1.6e12, etc.
Conversion Using the Power Formula :
DC Watts to Volts Calculation:
The voltage (V) in volts (V) is equal to the Real Power (P) in Watts (W), divided by the Current (I) in amps (A):
For example, let’s find the voltage of a circuit with 1.2 amps of current and 20 ohms of resistance.
V_{(V)} = 1.2 A ÷ 20 Ω
V_{(V)} = 24 V
AC Single Phase Watts to Volts Calculation:
The RMS voltage (V) in volts (V) is equal to the Real Power (P) in watts (W), divided by the power factor (PF) times the phase Current (I) in amps (A):
For example, let’s find the voltage of a circuit with 1.2 amps of current and 20 ohms of resistance.
V_{(V)} = 1.2 A ÷ 20 Ω
V_{(V)} = 24 V
Ac Three Phase Watts to Volts Calculation :
Calculation with Line to Line Voltage:
The linetoline RMS voltage V_{LL} in volts (V) is equal to the Real power (P) in watts (W), divided by the square root of 3 times the power factor (PF) times the phase current (I) in amps (A):
For example, let’s find the voltage of a circuit with 1.2 amps of current and 20 ohms of resistance.
V_{(V)} = 1.2 A ÷ 20 Ω
V_{(V)} = 24 V
Calculation with Line to Neutral Voltage:
The line to neutral RMS voltage (V) _{LN} in volts (V) is equal to the Real power (P) in watts (W), divided by 3 times the power factor (PF) times the phase current (I) in amps (A):
For example, let’s find the voltage of a circuit with 1.2 amps of current and 20 ohms of resistance.
V_{(V)} = 1.2 A ÷ 20 Ω
V_{(V)} = 24 V
Where:

 P = Power in watts
 V = Voltage in volts
 I = Current in amperes
 Cosθ = Power factor in AC circuits
 V_{LL} = Line to Line Voltage in 3Phase Circuits
 V_{LN} = Line to Neutral Voltage in 3Phase Circuits
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How to use This Calculator?
To use the above “Name” follow the below steps:
You can get the components from any of the sites below:
You can get the components from any of the sites below:
You can get the components from any of the sites below:
You can get the components from any of the sites below:
You can get the components from any of the sites below:
Amps to Volts Conversion table:
Power (W)  Voltage (V)  Current (A) 

10 watts  220 volts  0.045 amps 
20 watts  220 volts  0.090 amps 
30 watts  220 volts  0.136 amps 
40 watts  220 volts  0.181 amps 
50 watts  220 volts  0.227 amps 
60 watts  220 volts  0.272 amps 
70 watts  220 volts  0.318 amps 
80 watts  220 volts  0.363 amps 
90 watts  220 volts  0.409 amps 
100 watts  220 volts  0.454 amps 
200 watts  220 volts  0.909 amps 
300 watts  220 volts  1.363 amps 
400 watts  220 volts  1.818 amps 
500 watts  220 volts  2.272 amps 
600 watts  220 volts  2.727 amps 
700 watts  220 volts  3.181 amps 
800 watts  220 volts  3.636 amps 
900 watts  220 volts  4.090 amps 
1000 watts  220 volts  4.545 amps 
Device  Typical PF 

Resistive Load  1 
Fluorescent Lamp  0.95 
Incandescent Lamp  1 
Induction Motor full load  0.85 
Induction Motor no Load  0.35 
Resistive Oven  1 
Synchronous Motor  0.9 
Power Factor Value conversion table 
Frequently asked questions
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