Kilowatts to Amps Calculator

To use the calculator, select the current type, enter the power in kilowatts, voltage in volts, and power factor (if applicable). For AC three phase systems, choose between line to line or line to neutral voltage. Click “Calculate” to display the results in the output section. Click “Reset” to clear all fields and start a new calculation.

Like this? Please share:

Amps to kW calculator ►

Calculation of Amperage from DC Kilowatts

I_(A) = 1000 ×

P_(kW)V_(V)

, where

I_(A) – electric current in amperes (A);

P_(kW)– electrical power in kilowatts (kW);

V_(V) – voltage in volts (V).

How to Calculate Amps from AC Single-Phase Kilowatts

I_(A) = 1000 ×

P_(kW)PF × V_(V)

, where

I_(A) – electric current I in amps (A).

P_(kW)– power in kilowatts (kW);

PF – power factor;

V_(V) – RMS voltage in volts (V);

AC Three Phase Kilowatts to Amps Calculation

Line-to-Line Voltage Calculation

I_(A) = 1000 ×

P_(kW)√3 × PF × V_L-L(V)

, where

I_(A) – phase current in amperes (A);

P_(kW)– electrical power in kilowatts (kW);

PF – power factor;

V_{L-L (V)} – line to line RMS voltage in volts (V).

Calculation with Line to Neutral Voltage

I_(A) = 1000 ×

P_(kW)3 × PF × V_L-N(V)

I_(A) – phase current in amps (A);

P_(kW)– power in kilowatts (kW);

PF – power factor;

V_L-N (V) – line to neutral RMS voltage volts (V).

Typical Power Factor Values

Here are typical power factor values in table:

Device/Load	Power Factor
Incandescent lamps	1.0
Resistive loads	1.0
Synchronous motors	0.8-0.95
Induction motors (small)	0.7-0.8
Induction motors (large)	0.85-0.95
Transformers	0.8-0.95
Fluorescent lighting (magnetic ballast)	0.7-0.9
Fluorescent lighting (electronic ballast)	0.9-0.99
Computers and electronics	0.6-0.8
UPS	0.7-0.9
Welding Machine	0.6-0.8
Air Conditioner	0.85-0.95

Table 1 – typical power factor values

kW to Amps Conversion Tables

DC Kilowatts to Amps (kW to Amps)

Here is the kW to Amps Conversion Table at 110 VDC and 220 VDC for 1 kW to 1000 kW:

Power (kW)	Current (Amps) at 110 VDC	Current (Amps) at 220 VDC
1	9.09	4.55
2	18.18	9.09
3	27.27	13.64
4	36.36	18.18
5	45.45	22.73
6	54.54	27.27
7	63.63	31.82
8	72.72	36.36
9	81.81	40.91
10	90.90	45.45
20	181.81	90.91
30	272.72	136.36
40	363.63	181.82
50	454.54	227.27
60	545.45	272.73
70	636.36	318.18
80	727.27	363.64
90	818.18	409.09
100	909.09	454.55
500	4545.45	2272.73
1000	9090.91	4545.45

Table 2 – DC Kilowatts to Amps (kW to Amps)

Single Phase AC Kilowatts to Amps (kW to Amps) at a P.F. of 0.9

Here is the table for single-phase AC Kilowatts to Amps (kW to Amps) at a power factor of 0.9 in 120 and 240 volts single-phase AC for power 1 kW to 1000 kW:

Power (kW)	Current (Amps) at 120 VAC	Current (Amps) at 240 VAC
1	8.33	4.63
2	16.67	9.26
3	25.00	13.89
4	33.33	18.52
5	41.67	23.15
6	50.00	27.78
7	58.33	32.41
8	66.67	37.04
9	75.00	41.67
10	83.33	46.30
20	166.67	92.59
30	250.00	138.89
40	333.33	185.19
50	416.67	231.48
60	500.00	277.78
70	583.33	324.07
80	666.67	370.37
90	750.00	416.67
100	833.33	462.96
500	4166.67	2314.81
1000	8333.33	4629.63

Table 3 – Single Phase AC Kilowatts to Amps (kW to Amps) at a P.F. of 0.9

Motor Current Ratings (Three-Phase AC)

Motor 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.

Power	Current at 120V	Current at 208V	Current at 240V	Current at 277V	Current at 480V
1 kW	6.014 A	3.47 A	3.007 A	2.605 A	1.504 A
2 kW	12.028 A	6.939 A	6.014 A	5.211 A	3.007 A
3 kW	18.042 A	10.409 A	9.021 A	7.816 A	4.511 A
4 kW	24.056 A	13.879 A	12.028 A	10.421 A	6.014 A
5 kW	30.07 A	17.348 A	15.035 A	13.027 A	7.518 A
6 kW	36.084 A	20.818 A	18.042 A	15.632 A	9.021 A
7 kW	42.098 A	24.288 A	21.049 A	18.238 A	10.525 A
8 kW	48.113 A	27.757 A	24.056 A	20.843 A	12.028 A
9 kW	54.127 A	31.227 A	27.063 A	23.448 A	13.532 A
10 kW	60.141 A	34.697 A	30.07 A	26.054 A	15.035 A
15 kW	90.211 A	52.045 A	45.105 A	39.081 A	22.553 A
20 kW	120.28 A	69.393 A	60.141 A	52.107 A	30.07 A
25 kW	150.35 A	86.741 A	75.176 A	65.134 A	37.588 A
30 kW	180.42 A	104.09 A	90.211 A	78.161 A	45.105 A
35 kW	210.49 A	121.44 A	105.25 A	91.188 A	52.623 A
40 kW	240.56 A	138.79 A	120.28 A	104.21 A	60.141 A
45 kW	270.63 A	156.13 A	135.32 A	117.24 A	67.658 A
50 kW	300.7 A	173.48 A	150.35 A	130.27 A	75.176 A
55 kW	330.77 A	190.83 A	165.39 A	143.3 A	82.693 A
60 kW	360.84 A	208.18 A	180.42 A	156.32 A	90.211 A
65 kW	390.91 A	225.53 A	195.46 A	169.35 A	97.729 A
70 kW	420.98 A	242.88 A	210.49 A	182.38 A	105.25 A
75 kW	451.05 A	260.22 A	225.53 A	195.4 A	112.76 A
80 kW	481.13 A	277.57 A	240.56 A	208.43 A	120.28 A
85 kW	511.2 A	294.92 A	255.6 A	221.46 A	127.8 A
90 kW	541.27 A	312.27 A	270.63 A	234.48 A	135.32 A
95 kW	571.34 A	329.62 A	285.67 A	247.51 A	142.83 A
100 kW	601.41 A	346.97 A	300.7 A	260.54 A	150.35 A
125 kW	751.76 A	433.71 A	375.88 A	325.67 A	187.94 A
150 kW	902.11 A	520.45 A	451.05 A	390.81 A	225.53 A
175 kW	1,052.5 A	607.19 A	526.23 A	455.94 A	263.12 A
200 kW	1,202.8 A	693.93 A	601.41 A	521.07 A	300.7 A
225 kW	1,353.2 A	780.67 A	676.58 A	586.21 A	338.29 A
250 kW	1,503.5 A	867.41 A	751.76 A	651.34 A	375.88 A
275 kW	1,653.9 A	954.15 A	826.93 A	716.48 A	413.47 A
300 kW	1,804.2 A	1,040.9 A	902.11 A	781.61 A	451.05 A
325 kW	1,954.6 A	1,127.6 A	977.29 A	846.75 A	488.64 A
350 kW	2,104.9 A	1,214.4 A	1,052.5 A	911.88 A	526.23 A
375 kW	2,255.3 A	1,301.1 A	1,127.6 A	977.01 A	563.82 A
400 kW	2,405.6 A	1,387.9 A	1,202.8 A	1,042.1 A	601.41 A
425 kW	2,556 A	1,474.6 A	1,278 A	1,107.3 A	638.99 A
450 kW	2,706.3 A	1,561.3 A	1,353.2 A	1,172.4 A	676.58 A
475 kW	2,856.7 A	1,648.1 A	1,428.3 A	1,237.6 A	714.17 A
500 kW	3,007 A	1,734.8 A	1,503.5 A	1,302.7 A	751.76 A
525 kW	3,157.4 A	1,821.6 A	1,578.7 A	1,367.8 A	789.35 A
550 kW	3,307.7 A	1,908.3 A	1,653.9 A	1,433 A	826.93 A
575 kW	3,458.1 A	1,995.1 A	1,729 A	1,498.1 A	864.52 A
600 kW	3,608.4 A	2,081.8 A	1,804.2 A	1,563.2 A	902.11 A
625 kW	3,758.8 A	2,168.5 A	1,879.4 A	1,628.4 A	939.7 A
650 kW	3,909.1 A	2,255.3 A	1,954.6 A	1,693.5 A	977.29 A
675 kW	4,059.5 A	2,342 A	2,029.7 A	1,758.6 A	1,014.9 A
700 kW	4,209.8 A	2,428.8 A	2,104.9 A	1,823.8 A	1,052.5 A
725 kW	4,360.2 A	2,515.5 A	2,180.1 A	1,888.9 A	1,090 A
750 kW	4,510.5 A	2,602.2 A	2,255.3 A	1,954 A	1,127.6 A
775 kW	4,660.9 A	2,689 A	2,330.5 A	2,019.2 A	1,165.2 A
800 kW	4,811.3 A	2,775.7 A	2,405.6 A	2,084.3 A	1,202.8 A
825 kW	4,961.6 A	2,862.5 A	2,480.8 A	2,149.4 A	1,240.4 A
850 kW	5,112 A	2,949.2 A	2,556 A	2,214.6 A	1,278 A
875 kW	5,262.3 A	3,035.9 A	2,631.2 A	2,279.7 A	1,315.6 A
900 kW	5,412.7 A	3,122.7 A	2,706.3 A	2,344.8 A	1,353.2 A
925 kW	5,563 A	3,209.4 A	2,781.5 A	2,410 A	1,390.8 A
950 kW	5,713.4 A	3,296.2 A	2,856.7 A	2,475.1 A	1,428.3 A
975 kW	5,863.7 A	3,382.9 A	2,931.9 A	2,540.2 A	1,465.9 A
1000 kW	6,014.1 A	3,469.7 A	3,007 A	2,605.4 A	1,503.5 A

Table 4 – Motor Current Ratings (Three-Phase AC)

Kilowatts to Amps Calculator

Calculation of Amperage from DC Kilowatts

How to Calculate Amps from AC Single-Phase Kilowatts

AC Three Phase Kilowatts to Amps Calculation

Line-to-Line Voltage Calculation

Calculation with Line to Neutral Voltage

Typical Power Factor Values

kW to Amps Conversion Tables

DC Kilowatts to Amps (kW to Amps)

Single Phase AC Kilowatts to Amps (kW to Amps) at a P.F. of 0.9

Motor Current Ratings (Three-Phase AC)

See Also

About The Author

Dmitry Makarov