Power Converter Calculator  how to Convert Amps To Watts
Amps to Watts. The formula for this conversion is as follows: Amps = Watts / Volts. we’ll use common wattage and voltage.
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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 Amps to Watts Calculation:
The Real Power (P) in watts (W) is equal to the Current I in amps (A), times the voltage V in volts (V):
For example, let’s find the power in watts for a circuit with 12 amps of current at 80 volts.
P_{(w)} = 12 x 80
P_{(w)} = 960 w
AC Single Phase Amps to Watts 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):
V_{(V)} = 24 V
Ac Three Phase Amps 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 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 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 VLN in volts (V):
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 “Amps 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 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.
03. Enter Supply Voltage: Input the supply voltage or motor voltage value in the specified input box. You can enter the value in Volts or Kilovolts by choosing the appropriate option from the dropdown.
04. Enter Power Factor: Input the power factor of the motor in the provided input box. The power factor is a unitless value typically between 0 and 1.
05. Select Voltage Type: Choose between “Line to Line Voltage” or “Line to Neutral Voltage” by choosing the appropriate option from the dropdown.
06. 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.
07. Calculate: Click the “Calculate” button to obtain the results. The calculated results will be displayed in the “Results:” section.
08. Swap: If you want to “Swap” the calculated to Exchange conversion, you can click the “Swap” button, and Calculate will be Exchange.
09. Result: The calculated “result” will be displayed in the respective “Result In Watts (W)” output field.
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
1 Volt is defined as energy consumption of 1 joule per electric charge of 1 coulomb.
When spelled out, it means voltage = current (A) x resistance (ohm) , or volts = amps x ohms, or V = A x Ω.
The electrical efficiency is typically expressed as a power factor between 0 and 1. The closer the power factor rating is to 1, the more efficiently the kVA will be converted into kilowatts.
The formula for power in watts is given by the work and the time. The formula is P = W/t, where W is the work done in some time t.
Current (A) = Real Power (W) / Voltage (V).