Volts to Watts Calculation  Online Electrical Calculators
Volts (V) to Watts (W) Conversion Calculator.
Enter the Voltage (V) in volts (V) and current (I) in amps (A), and press the calculate button to get the Real Power (P) in Watts (W):
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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 Volts to Watts Calculation:
The Real Power (P) in watts (W) is equal to the voltage V in volts (V), times the current I in amps (A):
For example, let’s convert 24 volts to watts for a DC Line circuit with 5 amps of current.
P_{(W)} = 24 x 5
P_{(W)} = 120 W
AC Single Phase Watts to Amps Calculation:
The Real power (P) in watts (W) is equal to the power factor PF times the phase current I in amps (A), times the RMS voltage V in volts (V):
For example, let’s convert 220 volts to watts for an AC electrical circuit with 20 amps of current and a power factor of 0.9.
P_{(W)} = 0.9 x 220 x 20
P_{(W)} = 3960 W
Ac Three Phase Volts to Watts Calculation :
Calculation with Line to Line Voltage:
The Real power (P) in watts (W) is equal to the square root of 3 times the power factor PF times the phase current I in amps (A), times the linetoline RMS voltage V_{LL} in volts (V):
For example, let’s convert 440 Volts to watts for an AC Electrical circuit with 15 amps of current and a power factor of 0.8.
P_{(W)} = √3 x pf x I_{(A)} x V_{(V)}
P_{(W)} = √3 x 0.8 x 15 x 440
P_{(W)} = 9145 W
Calculation with Line to Neutral Voltage:
The Real power (P) in watts (W) is equal to 3 times the power factor PF times the phase current I in amps (A), times the line to neutral RMS voltage V_{LN} in volts (V):
P_{(W)} = 3 x 0.9 x 10 x 440
P_{(W)} = 11880 W
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 “Volts to Watts Conversion Calculator” follow the below steps:
01. Select Phase Type: Choose between “DC Line” “Single Phase” or “3 Phase” by choosing the appropriate option from the dropdown.
02. Enter Real Power: Input the Real Power in watts or KW value in the specific input box. You can enter the value in watts or kilowatts by choosing the appropriate option from the dropdown.
03. Enter Current: Input the Current in Amps value in the specified input box. You can enter the value in A or KA by choosing the appropriate option from the dropdown.
04. Reset: If you want to “reset” the calculator to perform another conversion, you can click the “Reset” button, and all input fields will be cleared.
05. Calculate: Click the “Calculate” button to obtain the results. The calculated results will be displayed in the “Results:” section.
06. Swap: If you want to “Swap” the calculated to Exchange conversion, you can click the “Swap” button, and Calculate will be Exchange.
07. Result: The calculated “result” will be displayed in the respective “Result In Watts (W)” output field.
Volts to Watts Conversion table:
Voltage (V)  Current (A)  Power (W) 

10 Volts  7 Amps  63 Watts 
20 Volts  7 Amps  126 Watts 
30 Volts  7 Amps  189 Watts 
40 Volts  7 Amps  252 Watts 
50 Volts  7 Amps  315 Watts 
60 Volts  7 Amps  378 Watts 
70 Volts  7 Amps  441 Watts 
80 Volts  7 Amps  504 Watts 
90 Volts  7 Amps  567 Watts 
100 Volts  7 Amps  630 Watts 
105 Volts  7 Amps  661 Watts 
110 Volts  7 Amps  693 Watts 
115 Volts  7 Amps  724 Watts 
120 Volts  7 Amps  756 Watts 
125 Volts  7 Amps  787 Watts 
130 Volts  7 Amps  819 Watts 
135 Volts  7 Amps  850 Watts 
140 Volts  7 Amps  882 Watts 
145 Volts  7 Amps  913 Watts 
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
220V refers to voltage. A watt is a unit that expresses Real power, according to Real power = voltage × current, so if the current is 20A, the power corresponding to the voltage of 220V is 4400W.
When spelled out, it means voltage = current (A) x resistance (ohm), or volts = amps x ohms, or V = A x Ω.
differences between watts and volts are given here in detail. Both volts and watts are related to each other. 1 watt is defined as the energy required by 1 ampere of current to flow through the potential difference of 1 volt.
Amps multiplied by Volts equals Watts, which is the measurement used to determine the amount of energy. The higher the wattage is, the more Real power and output from the appliance.
How do you calculate watts?  Watt's equation. Our calculator is based on the 2 laws that describe simple electrical circuits. 1 of them  Watt's law  states that: Power = Voltage * Current  in symbols: P = V * I.