Volts to KW Calculation  Online Electrical Calculators
Volts (V) to Kilowatts (KW) Calculator.
Enter the voltage in volts (V), current (I) in amps (A), and press the calculate button to get the Real Power (P) in kilowatts (kW):
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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 Kw Calculation:
The Real power (P) in kilowatts (kW) is equal to the voltage V in volts (V), times the Current (I) in amps (A) divided by 1000:
For example, let’s convert 24 volts to KW for a DC circuit with 5 amps of current.
P_{(KW)} = 24 x 5 ÷ 1000
P_{(kw)} = 0.12 Kw
AC Single Phase Volts to Kw Calculation:
The Real power (P) in kilowatts (kW) is equal to the power factor PF times the current I in amps (A), times the voltage V in volts (V) divided by 1000:
For example, let’s convert 220 volts to Kw for an AC electrical circuit with 15 amps of current and a power factor of 0.8.
P_{(KW)} = 0.8 x 220 x 15 ÷ 1000
P_{(kw)} = 2.640 Kw
Ac Three Phase Volts to Kw Calculation :
Calculation with Line to Line Voltage:
The Real power (P) in kilowatts (kW) is equal to the square root of 3 times the power factor PF times the current I in amps (A), times the linetoline RMS voltage V_{LL} in volts (V) divided by 1000:
P_{(KW)} = √3 x Pf x V_{(V)} x I_{(A)} ÷ 1000
P_{(KW)} = √3 x 0.8 x 440 x 12 ÷ 1000
P_{(kw)} = 7.316 Kw
Calculation with Line to Neutral Voltage:
The Real Power (P) in kilowatts (kW) is equal to the 3 times the power factor PF times the current I in amps (A), times the linetoneutral RMS voltage V_{LN} in volts (V) divided by 1000:
For example, let’s convert 440 Volts to KW for an AC Electrical circuit with 14 amps of current and a power factor of 0.9.
P_{(KW)} = 3 x 0.9 x 440 x 14 ÷ 1000
P_{(kw)} = 16.632 Kw
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 Kw 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 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.
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. 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. 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.
06. Calculate: Click the “Calculate” button to obtain the results. The calculated results will be displayed in the “Results:” section.
07. Swap: If you want to “Swap” the calculated to Exchange conversion, you can click the “Swap” button, and Calculate will be Exchange.
08. Result: The calculated “result” will be displayed in the respective “Result In Kilowatts (Kw)” output field.
Volts to KW Conversion table:
Voltage (V)  Current (A)  Power (KW) 

10 Volts  5 Amps  0.045 Kw 
20 Volts  5 Amps  0.090 Kw 
30 Volts  5 Amps  0.135 Kw 
40 Volts  5 Amps  0.180 Kw 
50 Volts  5 Amps  0.225 Kw 
60 Volts  5 Amps  0.270 Kw 
70 Volts  5 Amps  0.315 Kw 
80 Volts  5 Amps  0.360 Kw 
90 Volts  5 Amps  0.405 Kw 
100 Volts  5 Amps  0.450 Kw 
200 Volts  5 Amps  0.900 Kw 
300 Volts  5 Amps  1.350 Kw 
400 Volts  5 Amps  1.800 Kw 
500 Volts  5 Amps  2.250 Kw 
600 Volts  5 Amps  2.700 Kw 
700 Volts  5 Amps  3.150 Kw 
800 Volts  5 Amps  3.600 Kw 
900 Volts  5 Amps  4.050 Kw 
1000 Volts  5 Amps  4.500 Kw 
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
An electrical theory tells us that for a singlephase system, kW = (V × I × PF) ÷ 1,000. kW = (V × I) ÷ 1,000.
For example, a 200kVA generator with a power factor of 0.8 outputs 80kW actual power; 200 kVA x 0.8 = 160 kW.
6 unit of electricity = 6 kWh. The electricity used is generally charged for in “unit of electricity'. Killowatthours is the product of watts x time (1 kilowatt = 1000 watts).
How Many Watts in 1 Amp? The wattage in 1 amp depends on the voltage of the system. Using the formula for DC conversion: Watts = Amps x Volts, at 120 volts, 2 amps would equal 240 watts.
1 Volt is defined as energy consumption of 1 joule per electric charge of 1 coulomb. 1V = 1J/C.