Kilowatts to Amps Calculator

Kilowatts (kW) to amps (A) calculator.

A
mA

Amps to kW calculator ►

* Use e for scientific notation. E.g: 5e3, 4e-8, 1.45e12

DC kilowatts to amps calculation

So The current I in amps (A) is equal to [1000] times the power P in kilowatts (kW), divided by the voltage  V in volts (V).

I(A) = 1000 × P(kW) / V(V)

Example 1

What is the current in amps when the power consumption is 0.33 kilowatts and the voltage supply is 120 volts?

I = 1000 × 0.33kW / 120V = 2.75A

Example 2

What is the current in amps when the power consumption is 0.33 kilowatts and the voltage supply is 150 volts?

I = 1000 × 0.33kW / 150V = 2.2A

AC single phase kilowatts to amps calculation

So The phase current I in amps (A) is equal to [1000] times the power P in kilowatts (kW), divided by the power factor  PF times the RMS voltage  V in volts (V).

I(A) = 1000 × P(kW) / (PF × V(V) )

Example 1

What is the phase current in amps when the power consumption is 0.33 kilowatts, the power factor is 0.8 and the RMS voltage supply is 120 volts?

I = 1000 × 0.33kW / (0.8 × 120V) = 3.4375A

Example 2

What is the phase current in amps when the power consumption is 0.33 kilowatts, the power factor is 0.8 and the RMS voltage supply is 150 volts?

I = 1000 × 0.33kW / (0.8 × 150V) = 2.75A

AC three phase kilowatts to amps calculation

Calculation with line to line voltage

So The phase current I in amps (A) is equal to [1000] times the power P in kilowatts (kW), divided by square root of 3 times the power factor  PF times the line to line RMS voltage  VL-L in volts (V).

I(A) = 1000 × P(kW) / (√3 × PF × VL-L(V) )

Example 1

What is the phase current in amps when the power consumption is 0.33 kilowatts, the power factor is 0.8 and the voltage supply is 120 volts?

I = 1000 × 0.33kW / (√3 × 0.8 × 120V) = 1.984A

Example 2

What is the phase current in amps when the power consumption is 0.33 kilowatts, the power factor is 0.8 and the voltage supply is 150 volts?

I = 1000 × 0.33kW / (√3 × 0.8 × 150V) = 1.587A

Calculation with line to neutral voltage

So The phase current I in amps (A) is equal to [1000] times the 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).

I(A) = 1000 × P(kW) / (3 × PF × VL-N(V) )

 Current Ratings (Three-Phase AC)

current ratings based on kilowatt output at 120, 208, 240, 277, and 480 volts three-phase AC with an efficiency of 0.8 and a power-factor of 1.
PowerCurrent at 120VCurrent at 208VCurrent at 240VCurrent at 277VCurrent at 480V
1 kW6.014 A3.47 A3.007 A2.605 A1.504 A
2 kW12.028 A6.939 A6.014 A5.211 A3.007 A
3 kW18.042 A10.409 A9.021 A7.816 A4.511 A
4 kW24.056 A13.879 A12.028 A10.421 A6.014 A
5 kW30.07 A17.348 A15.035 A13.027 A7.518 A
6 kW36.084 A20.818 A18.042 A15.632 A9.021 A
7 kW42.098 A24.288 A21.049 A18.238 A10.525 A
8 kW48.113 A27.757 A24.056 A20.843 A12.028 A
9 kW54.127 A31.227 A27.063 A23.448 A13.532 A
10 kW60.141 A34.697 A30.07 A26.054 A15.035 A
15 kW90.211 A52.045 A45.105 A39.081 A22.553 A
20 kW120.28 A69.393 A60.141 A52.107 A30.07 A
25 kW150.35 A86.741 A75.176 A65.134 A37.588 A
30 kW180.42 A104.09 A90.211 A78.161 A45.105 A
35 kW210.49 A121.44 A105.25 A91.188 A52.623 A
40 kW240.56 A138.79 A120.28 A104.21 A60.141 A
45 kW270.63 A156.13 A135.32 A117.24 A67.658 A
50 kW300.7 A173.48 A150.35 A130.27 A75.176 A
55 kW330.77 A190.83 A165.39 A143.3 A82.693 A
60 kW360.84 A208.18 A180.42 A156.32 A90.211 A
65 kW390.91 A225.53 A195.46 A169.35 A97.729 A
70 kW420.98 A242.88 A210.49 A182.38 A105.25 A
75 kW451.05 A260.22 A225.53 A195.4 A112.76 A
80 kW481.13 A277.57 A240.56 A208.43 A120.28 A
85 kW511.2 A294.92 A255.6 A221.46 A127.8 A
90 kW541.27 A312.27 A270.63 A234.48 A135.32 A
95 kW571.34 A329.62 A285.67 A247.51 A142.83 A
100 kW601.41 A346.97 A300.7 A260.54 A150.35 A
125 kW751.76 A433.71 A375.88 A325.67 A187.94 A
150 kW902.11 A520.45 A451.05 A390.81 A225.53 A
175 kW1,052.5 A607.19 A526.23 A455.94 A263.12 A
200 kW1,202.8 A693.93 A601.41 A521.07 A300.7 A
225 kW1,353.2 A780.67 A676.58 A586.21 A338.29 A
250 kW1,503.5 A867.41 A751.76 A651.34 A375.88 A
275 kW1,653.9 A954.15 A826.93 A716.48 A413.47 A
300 kW1,804.2 A1,040.9 A902.11 A781.61 A451.05 A
325 kW1,954.6 A1,127.6 A977.29 A846.75 A488.64 A
350 kW2,104.9 A1,214.4 A1,052.5 A911.88 A526.23 A
375 kW2,255.3 A1,301.1 A1,127.6 A977.01 A563.82 A
400 kW2,405.6 A1,387.9 A1,202.8 A1,042.1 A601.41 A
425 kW2,556 A1,474.6 A1,278 A1,107.3 A638.99 A
450 kW2,706.3 A1,561.3 A1,353.2 A1,172.4 A676.58 A
475 kW2,856.7 A1,648.1 A1,428.3 A1,237.6 A714.17 A
500 kW3,007 A1,734.8 A1,503.5 A1,302.7 A751.76 A
525 kW3,157.4 A1,821.6 A1,578.7 A1,367.8 A789.35 A
550 kW3,307.7 A1,908.3 A1,653.9 A1,433 A826.93 A
575 kW3,458.1 A1,995.1 A1,729 A1,498.1 A864.52 A
600 kW3,608.4 A2,081.8 A1,804.2 A1,563.2 A902.11 A
625 kW3,758.8 A2,168.5 A1,879.4 A1,628.4 A939.7 A
650 kW3,909.1 A2,255.3 A1,954.6 A1,693.5 A977.29 A
675 kW4,059.5 A2,342 A2,029.7 A1,758.6 A1,014.9 A
700 kW4,209.8 A2,428.8 A2,104.9 A1,823.8 A1,052.5 A
725 kW4,360.2 A2,515.5 A2,180.1 A1,888.9 A1,090 A
750 kW4,510.5 A2,602.2 A2,255.3 A1,954 A1,127.6 A
775 kW4,660.9 A2,689 A2,330.5 A2,019.2 A1,165.2 A
800 kW4,811.3 A2,775.7 A2,405.6 A2,084.3 A1,202.8 A
825 kW4,961.6 A2,862.5 A2,480.8 A2,149.4 A1,240.4 A
850 kW5,112 A2,949.2 A2,556 A2,214.6 A1,278 A
875 kW5,262.3 A3,035.9 A2,631.2 A2,279.7 A1,315.6 A
900 kW5,412.7 A3,122.7 A2,706.3 A2,344.8 A1,353.2 A
925 kW5,563 A3,209.4 A2,781.5 A2,410 A1,390.8 A
950 kW5,713.4 A3,296.2 A2,856.7 A2,475.1 A1,428.3 A
975 kW5,863.7 A3,382.9 A2,931.9 A2,540.2 A1,465.9 A
1000 kW6,014.1 A3,469.7 A3,007 A2,605.4 A1,503.5 A

 Current Ratings (Single-Phase AC)

So current ratings based on kilowatt output at 120 and 240 volts single-phase AC with an efficiency of 0.8 and a power-factor of 1.
PowerCurrent at 120VCurrent at 240V
1 kW10.417 A5.208 A
2 kW20.833 A10.417 A
3 kW31.25 A15.625 A
4 kW41.667 A20.833 A
5 kW52.083 A26.042 A
6 kW62.5 A31.25 A
7 kW72.917 A36.458 A
8 kW83.333 A41.667 A
9 kW93.75 A46.875 A
10 kW104.17 A52.083 A
15 kW156.25 A78.125 A
20 kW208.33 A104.17 A
25 kW260.42 A130.21 A
30 kW312.5 A156.25 A
35 kW364.58 A182.29 A
40 kW416.67 A208.33 A
45 kW468.75 A234.38 A
50 kW520.83 A260.42 A
55 kW572.92 A286.46 A
60 kW625 A312.5 A
65 kW677.08 A338.54 A
70 kW729.17 A364.58 A
75 kW781.25 A390.63 A
80 kW833.33 A416.67 A
85 kW885.42 A442.71 A
90 kW937.5 A468.75 A
95 kW989.58 A494.79 A
100 kW1,041.7 A520.83 A
125 kW1,302.1 A651.04 A
150 kW1,562.5 A781.25 A
175 kW1,822.9 A911.46 A
200 kW2,083.3 A1,041.7 A
225 kW2,343.8 A1,171.9 A
250 kW2,604.2 A1,302.1 A
275 kW2,864.6 A1,432.3 A
300 kW3,125 A1,562.5 A
325 kW3,385.4 A1,692.7 A
350 kW3,645.8 A1,822.9 A
375 kW3,906.3 A1,953.1 A
400 kW4,166.7 A2,083.3 A
425 kW4,427.1 A2,213.5 A
450 kW4,687.5 A2,343.8 A
475 kW4,947.9 A2,474 A
500 kW5,208.3 A2,604.2 A
525 kW5,468.8 A2,734.4 A
550 kW5,729.2 A2,864.6 A
575 kW5,989.6 A2,994.8 A
600 kW6,250 A3,125 A
625 kW6,510.4 A3,255.2 A
650 kW6,770.8 A3,385.4 A
675 kW7,031.3 A3,515.6 A
700 kW7,291.7 A3,645.8 A
725 kW7,552.1 A3,776 A
750 kW7,812.5 A3,906.3 A
775 kW8,072.9 A4,036.5 A
800 kW8,333.3 A4,166.7 A
825 kW8,593.8 A4,296.9 A
850 kW8,854.2 A4,427.1 A
875 kW9,114.6 A4,557.3 A
900 kW9,375 A4,687.5 A
925 kW9,635.4 A4,817.7 A
950 kW9,895.8 A4,947.9 A
975 kW10,156 A5,078.1 A
1000 kW10,417 A5,208.3 A

 

 

Typical power factor values

Do not use typical power factor values for accurate calculations.

Device Typical power factor
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

 

kW to amps calculation ►

 

See also

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