Single and 3-Phase Power KW to Amps Calculator
Kilowatts can’t be converted to amps directly. The amount of current or power depends on the power factor, type of current, and voltage type.
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Note, For higher values like 5×103, 10×10-6, 1.6 x1012, enter the value like this for scientific notation as 5e3, 10e-6, 1.6e12, etc.
Conversion Using the Power Formula :
DC KW to Amps Calculation:
The Current (I) in amps (A) is equal to 1000 times the Real Power (P) in kilowatts (kW), divided by the voltage V in volts (V):
For example, let’s find the current of a circuit with 3 kW of power at 80 volts.
I(A) = 1000 x 3 ÷ 80
I(A) = 38 A
AC Single Phase KW to Amps Calculation:
The phase Current (I) in amps (A) is equal to 1000 times the Real Power (P) in kilowatts (kW), divided by the power factor PF times the RMS voltage V in volts (V):
For example, let’s find the current of an 8 kW motor with an efficiency of 75% and a power factor of 0.8 at 220 volts.
I(A) = 1000 x 8 ÷ 0.8 x 220
I(A) = 45 A
Ac Three Phase KW to Amps Calculation :
Calculation with Line to Line Voltage:
The phase Current I in amps (A) is equal to 1000 times the Real Power (P) in kilowatts (kW), divided by the square root of 3 times the power factor PF times the line-to-line RMS voltage VL-L in volts (V):
For example, let’s find the current usage of a 30 kW 3-phase motor with an efficiency of 80% and a power factor of 0.9 at 440 volts (line to line).
I(A) = 1000 x P(Kw) ÷ √3 x Pf x V(V)
I(A) = 1000 x 30 ÷ √3 x 0.9 x 440
I(A) = 44 A
Calculation with Line to Neutral Voltage:
The phase Current (I) in amps (A) is equal to 1000 times the Real Power (P) in kilowatts (kW), divided by 3 times the power factor PF times the line to neutral RMS voltage VL-N in volts (V):
For example, let’s find the current usage of a 15 kW 3-phase motor with an efficiency of 80% and a power factor of 0.9 at 440 volts (line to Neutral).
I(A) = 1000 x P(Kw) ÷ 3 x Pf x V(V)
I(A) = 1000 x 15 ÷ 3 x 0.9 x 440
I(A) = 13 A
Where:
-
- P = Power in kilowatts (KW)
- V = Voltage in volts
- I = Current in amperes
- Cosθ = Power factor in AC circuits
- VL-L = Line to Line Voltage in 3-Phase Circuits
- VL-N = Line to Neutral Voltage in 3-Phase Circuits
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How to use This Calculator?
To use the above “KW to Amps 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 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 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. 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 Amps (A)” output field.
KW to Amps Conversion table:
| Power (W) | Current at 120V | Current at 220V | Current at 440V |
|---|---|---|---|
| 1 KW | 9 A | 5 A | 1 A |
| 2 KW | 19 A | 10 A | 3 A |
| 3 KW | 28 A | 15 A | 4 A |
| 4 KW | 37 A | 20 A | 6 A |
| 5 KW | 46 A | 25 A | 7 A |
| 6 KW | 56 A | 30 A | 9 A |
| 7 KW | 65 A | 35 A | 10 A |
| 8 KW | 74 A | 40 A | 12 A |
| 9 KW | 83 A | 45 A | 13 A |
| 10 KW | 93 A | 51 A | 15 A |
| 12 KW | 102 A | 61 A | 17 A |
| 13 KW | 120 A | 66 A | 19 A |
| 14 KW | 130 A | 71 A | 20 A |
| 15 KW | 139 A | 76 A | 22 A |
| 16 KW | 148 A | 81 A | 23 A |
| 17 KW | 157 A | 86 A | 25 A |
| 18 KW | 167 A | 91 A | 26 A |
| 19 KW | 176 A | 96 A | 28 A |
| 20 KW | 185 A | 101 A | 29 A |
| 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
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.
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).
5 unit of electricity = 5 kWh. The electricity used is generally charged in “units of electricity'. Killowatt-hours is the product of watts x time (5 kilowatts = 5000 watts).
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.
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.