Conversion using the Kw to Amps Formula
How to Calculate Amperage from Real Power KW and Voltage volts using DC line current.
The Current I in amps A is calculated as the 1000 times the real power P in Kilowatts kw, divided by the voltage in volts v. Plug these values into the formula:
For Example, let's find the current of a circuit with 6 kW of power at 80 volts.
How to Calculate Amperage from Real Power KW, Voltage Volts and Power factor pf using AC Single Phase current.
The Phase Current I in amps A is calculated as the 1000 times the Real Power P in kilowatts kw, divided by the power factor in pf times the RMS voltage in volts V. Plug these values into the formula:
For Example, let's find the current of an 10 kW motor with an efficiency of 75% and a power factor of 0.8 at 220 volts.
How to Calculate Amperage from Real Power kw, Voltage volts and power factor pf using AC 3-phase current for Line-to-Line Voltage.
The 3 Phase Current i in amps A is calculated as the 1000 times the Real Power P in Kilowatts kw, divided by the square root of 3 times the Power factor in pf times the line-to-line RMS Voltage VL-L in volts v. Plug these values into the formula:
For Example, let's find the current usage of a 35 kW 3-phase motor with an efficiency of 80% and a power factor of 0.9 at 440 volts (line to line).
How to Calculate Amperage from Real Power KW, Voltage volts and power factor pf using AC 3-phase current for Line-to-Neutral Voltage.
The 3 Phase Current i in amps A is calculated as the 1000 times the Real Power P in Kilowatts kw, divided by the 3 times the Power factor in pf times the line-to-line RMS Voltage VL-L in volts v. Plug these values into the formula:
For Example, let's find the current usage of a 20 kW 3-phase motor with an efficiency of 80% and a power factor of 0.9 at 440 volts (line to Neutral).
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How to use Kw to Amps Calculator?
To use the above "Kw to Amps Conversion Calculator" follow the below steps:
1. Select Phase Type: Choose between DC Line, Single Phase Line, or 3 Phase Line by choosing the appropriate option from the dropdown.
2. Enter Real Power: Input the Real Power in Kilowatts or Load Kilowatts value in the specific input box. You can enter the value in millivolts mw, Watts W, kilowatts Kw, & Megawatts MW by choosing the appropriate option from the dropdown.

3. Enter Supply Voltage: Input the supply voltage or Load voltage value in the specified input box. You can enter the value in millivolts mV, Volts V, Kilovolts kV & MegaVolt MV by choosing the appropriate option from the dropdown.
4. Enter Power Factor: Input the power factor of the Load in the provided input box. The power factor is a unitless value typically between 0 and 1.
5. Reset: Click the 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.
6. Calculate: Click the Calculate button to obtain the results. The calculated results will be displayed in the Results: section.
7. Swap: If you want to Swap the calculated to Exchange conversion, you can click the Swap button, and Calculate will be Exchange.
8. Result: The calculated "Result" will be displayed in the respective Result In output Amps output field.
Kw to Amps conversion application
- Input Fields: Users enter Real Power KW, Voltage volts and Power factor pf.
- Real-Time Calculation: Converts KW to Amps instantly as the user enters the value.
- Multi-phase Support: Users can choose between Dc line, single-phase and three-phase systems for flexibility in calculations.
- Power Factor Consideration: Includes optional input for power factor in single phase, 3-phase calculations.
- Clear Results Display: Displays the calculated Amps clearly after clicking "Calculate".
KW To Amps Conversion Chart
Input | Output | ||
---|---|---|---|
Power (kW) | DC (Amps) | Single-Phase AC (Amps) | Three-Phase AC (Amps) |
1 | 4.35 | 5.43 | 2.72 |
2 | 8.70 | 10.87 | 5.43 |
3 | 13.04 | 16.30 | 8.15 |
5 | 21.74 | 27.17 | 13.58 |
10 | 43.48 | 54.35 | 27.17 |
20 | 86.96 | 108.70 | 54.35 |
50 | 217.39 | 271.74 | 135.87 |
100 | 434.78 | 543.48 | 271.74 |
Typical power factor values
Do not use typical power factor values for accurate calculations.
Equipment and appliances | cos θ | tan θ | |||
---|---|---|---|---|---|
Motor | Common induction motor | loaded at | 0 % | 0.17 | 5.80 |
25% | 0.55 | 1.52 | |||
50 % | 0.73 | 0.94 | |||
75 % | 0.80 | 0.75 | |||
100 % | 0.85 | 0.62 | |||
Lamps | Incandescent lamps | 1.0 | 0 | ||
Fluorescent lamps (uncompensated) | 0.5 | 1.73 | |||
Fluorescent lamps (compensated) | 0.93 | 0.39 | |||
Discharge lamps | 0.4 to 0.6 | 2.29 to 1.33 | |||
Ovens | Ovens using resistance elements | 1.0 | 0 | ||
Induction heating ovens (compensated) | 0.85 | 0.62 | |||
Dielectric type heating ovens | 0.85 | 0.62 | |||
Welding | Resistance-type soldering machines | 0.8 to 0.9 | 0.75 to 0.48 | ||
Fixed 1-phase arc-welding set | 0.5 | 1.73 | |||
Arc-welding motor-generating set | 0.7 to 0.9 | 1.02 to 0.48 | |||
Arc-welding transformer-rectifier set | 0.7 to 0.8 | 1.02 to 0.75 | |||
Arc furnace | 0.8 | 0.75 | |||
Power Factor Value Conversion Table |
Frequently Asked Questions - FAQs for KW to Amps Calculator
How do you convert kW?
We find the Real power in kilowatts (kW) by dividing the Real power in watts (W) by 1000. Here's the Formula for Converting Watts Into Kilowatts: Real Power (kW) = Watts(W) ÷ 1000.
What is 1 watt?
A body is said to have 1 watt of power if it can perform 1 joule of work in 1 second. Power is defined as the rate at which work is performed, or energy is converted.
What is kW?
A kW or kilowatt is a unit of measurement for the rate of power an electrical device or load uses. The higher the kW of a device, the more electrical power is needed to operate it. A kilowatt is 1000 watts (W).
How many volts is 1 amp?
Current is a count of the number of electrons flowing through a circuit. 1 amp is the amount of current produced by a force of one volt acting through the resistance of 1 ohm.
How many kW is 5 units?
5 unit of electricity = 5 kWh. The electricity used is generally charged in “units of electricity'. Killowatt-hours is the product of watts × time (5 kilowatts = 5000 watts).