Simple kW to Amps Conversion Calculator and Formula

kW to Amps Conversion Calculator, Formula, and Example – Both Kilowatts and ampere are essential as the parameters of electricity and electrical circuit. Watt is the parameter to calculate how much power consumed by a load and how much power delivered to a circuit. When we are talking about 1 Kilowatts, it means 1000 watts. Ampere is the parameter to calculate how much current drawn by a load and how much current delivered to a circuit. We will learn how to convert 1 kW to amps (1 kilowatt to ampere).

kw to amps

If you want to convert kW to Amps (power to current) or vice versa, you can easily use the kW to amps calculator below. Just choose voltage phase, power value, voltage value, and power factor. You can also use the Amps to kW converter simply by clicking the button. The results are shown below the kw to amps converter.

Kilowatts to Amps Calculator

How to Do kW to Amps Calculation

Like stated above, kiloWatts (kW) is the measurement of the power and ampere (A) is the measurement of the current. We can convert watts to ampere and vice versa directly but converting kW to amps and vice versa can’t be done directly. Besides watt and ampere, we also include voltage measurement in the conversion. We have to understand first that:

1 kilowatt = 1000 watts.

From the previous basic power formula, we know that:

    \begin{align*}I=\frac{P}{V}\end{align*}

DC Circuits – kilowatts (kW) to ampere (Amps)

If we are using DC circuit,

    \begin{align*}I=\frac{1000\times \mbox{kW}}{V}\end{align*}

Where:

I = DC current

V = DC voltage

To put it simply, we can get the amps from dividing the kilowatts by voltage and multiply it by 1000.

For easier explanation, let us review the example below:

We have a circuit with 1kW power at 120volts. The amps will be:

amps = (kW × 1,000) ÷ volts

amps = (1 × 1,000) ÷ 120

amps = 1,000 ÷ 120

amps = 8.33A

Single Phase AC Circuits – kilowatts (kW) to ampere (Amps)

If we are using single phase AC circuit,

    \begin{align*}I=\frac{1000\times \mbox{kW}}{V_{ac}\times \mbox{P.F}}\end{align*}

Where:

I = AC current (rms)

Vac = AC voltage (rms)

P.F = Power Factor

To put it simply, we can get the amps from dividing the kilowatts by the product between rms AC voltage and power factor, then multiply it by 1000.

For easier explanation, let us review the example below:

We have a circuit with 5kW power generator, 80% efficiency (0.8 PF) at 120volts. The amps will be:

amps = (kW × 1,000) ÷ (PF × volts)

amps = (5 × 1,000) ÷ (.8 × 120)

amps = 5,000 ÷ 96

amps = 52.1A

Three Phase AC Circuits – kilowatts (kW) to ampere (Amps)

If we are using three phase AC circuit,

    \begin{align*}I=\frac{1000\times \mbox{kW}}{\sqrt{3}\times V_{L}\times \mbox{P.F}}\end{align*}

Where:

I = AC current (rms)

VL = AC line voltage (rms)

P.F = Power Factor

To put it simply, we can get the amps from dividing the kilowatts by the product between √3, rms AC line voltage, and power factor, then multiply it by 1000.

If the phase voltage value is already known, we can calculate amps from kW using the formula below:

    \begin{align*}I=\frac{1000\times \mbox{kW}}{3\times V_{ph}\times \mbox{P.F}}\end{align*}

Where

Vph = AC phase voltage (rms)

To put it simply, we can get the amps from dividing the kilowatts by the product between 3, rms AC phase voltage, and power factor, then multiply it by 1000.

For easier explanation, let us review the example below:

We have a circuit with 25kW three-phase power generator, 80% efficiency (0.8 PF) at 240volts. The amps will be:

amps = (kW × 1,000) ÷ (√3 × PF × volts)

amps = (25 × 1,000) ÷ (1.73 × .8 × 240

amps = 75.18A

kW to Amps Conversion Table

You can find the amps value from known kilowatts in the tables below:

DC Kilowatts to Amps (kW to Amps).

kW to Amps Conversion Table at 110VDC and 220VDC.

KILOWATT

AMPS AT 110VDC

AMPS AT 220VDC

1.0 kW

9.09 A

4.55 A

1.1 kW

10.00 A

5.00 A

1.5 kW

13.64 A

6.82 A

2.0 kW

18.18 A

9.09 A

2.2 kW

20.00 A

10.00 A

3.0 kW

27.27 A

13.64 A

4.0 kW

36.36 A

18.18 A

5.5 kW

50.00 A

25.00 A

7.5 kW

68.18 A

34.09 A

11.0 kW

100.00 A

50.00 A

15.0 kW

136.36 A

68.18 A

18.5 kW

168.18 A

84.09 A

22.0 kW

200.00 A

100.00 A

30.0 kW

272.73 A

136.36 A

37.0 kW

336.36 A

168.18 A

45.0 kW

409.09 A

204.55 A

55.0 kW

500.00 A

250.00 A

75.0 kW

681.82 A

340.91 A

90.0 kW

818.18 A

409.09 A

110.0 kW

1000.00 A

500.00 A

132.0 kW

1200.00 A

600.00 A

160.0 kW

1454.55 A

727.27 A

200.0 kW

1818.18 A

909.09 A

250.0 kW

2272.73 A

1136.36 A

315.0 kW

2863.64 A

1431.82 A

355.0 kW

3227.27 A

1613.64 A

400.0 kW

3636.36 A

1818.18 A

500.0 kW

4545.45 A

2272.73 A

560.0 kW

5090.91 A

2545.45 A

630.0 kW

5727.27 A

2863.64 A

710.0 kW

6454.55 A

3227.27 A

800.0 kW

7272.73 A

3636.36 A

900.0 kW

8181.82 A

4090.91 A

1000.0 kW

9090.91 A

4545.45 A

 

Single Phase AC Kilowatts to Amps (kW to Amps).

Single phase kilowatts to amps (kW to amps) at a P.F. of 0.95

KILOWATT

AMPS AT 120VAC

AMPS AT 220VAC

AMPS AT 230VAC

1.0 kW

8.77 A

4.78 A

4.58 A

1.1 kW

9.65 A

5.26 A

5.03 A

1.5 kW

13.16 A

7.18 A

6.86 A

2.0 kW

17.54 A

9.57 A

9.15 A

2.2 kW

19.30 A

10.53 A

10.07 A

3.0 kW

26.32 A

14.35 A

13.73 A

4.0 kW

35.09 A

19.14 A

18.31 A

5.5 kW

48.25 A

26.32 A

25.17 A

7.5 kW

65.79 A

35.89 A

34.32 A

11.0 kW

96.49 A

52.63 A

50.34 A

15.0 kW

131.58 A

71.77 A

68.65 A

18.5 kW

162.28 A

88.52 A

84.67 A

22.0 kW

192.98 A

105.26 A

100.69 A

30.0 kW

263.16 A

143.54 A

137.30 A

37.0 kW

324.56 A

177.03 A

169.34 A

45.0 kW

394.74 A

215.31 A

205.95 A

55.0 kW

482.46 A

263.16 A

251.72 A

75.0 kW

657.89 A

358.85 A

343.25 A

90.0 kW

789.47 A

430.62 A

411.90 A

110.0 kW

964.91 A

526.32 A

503.43 A

132.0 kW

1157.89 A

631.58 A

604.12 A

160.0 kW

1403.51 A

765.55 A

732.27 A

200.0 kW

1754.39 A

956.94 A

915.33 A

250.0 kW

2192.98 A

1196.17 A

1144.16 A

315.0 kW

2763.16 A

1507.18 A

1441.65 A

355.0 kW

3114.04 A

1698.56 A

1624.71 A

400.0 kW

3508.77 A

1913.88 A

1830.66 A

500.0 kW

4385.96 A

2392.34 A

2288.33 A

560.0 kW

4912.28 A

2679.43 A

2562.93 A

630.0 kW

5526.32 A

3014.35 A

2883.30 A

710.0 kW

6228.07 A

3397.13 A

3249.43 A

800.0 kW

7017.54 A

3827.75 A

3661.33 A

900.0 kW

7894.74 A

4306.22 A

4118.99 A

1000.0 kW

8771.93 A

4784.69 A

4576.66 A

Generator current ratings based on kilowatt output at 120 and 240 volts single phase AC with a power factor of 0.8

Power

Current at 120V

Current at 240V

1 kW

10.417 A

5.208 A

2 kW

20.833 A

10.417 A

3 kW

31.25 A

15.625 A

4 kW

41.667 A

20.833 A

5 kW

52.083 A

26.042 A

6 kW

62.5 A

31.25 A

7 kW

72.917 A

36.458 A

8 kW

83.333 A

41.667 A

9 kW

93.75 A

46.875 A

10 kW

104.17 A

52.083 A

15 kW

156.25 A

78.125 A

20 kW

208.33 A

104.17 A

25 kW

260.42 A

130.21 A

30 kW

312.5 A

156.25 A

35 kW

364.58 A

182.29 A

40 kW

416.67 A

208.33 A

45 kW

468.75 A

234.38 A

50 kW

520.83 A

260.42 A

55 kW

572.92 A

286.46 A

60 kW

625 A

312.5 A

65 kW

677.08 A

338.54 A

70 kW

729.17 A

364.58 A

75 kW

781.25 A

390.63 A

80 kW

833.33 A

416.67 A

85 kW

885.42 A

442.71 A

90 kW

937.5 A

468.75 A

95 kW

989.58 A

494.79 A

100 kW

1,041.7 A

520.83 A

125 kW

1,302.1 A

651.04 A

150 kW

1,562.5 A

781.25 A

175 kW

1,822.9 A

911.46 A

200 kW

2,083.3 A

1,041.7 A

225 kW

2,343.8 A

1,171.9 A

250 kW

2,604.2 A

1,302.1 A

275 kW

2,864.6 A

1,432.3 A

300 kW

3,125 A

1,562.5 A

325 kW

3,385.4 A

1,692.7 A

350 kW

3,645.8 A

1,822.9 A

375 kW

3,906.3 A

1,953.1 A

400 kW

4,166.7 A

2,083.3 A

425 kW

4,427.1 A

2,213.5 A

450 kW

4,687.5 A

2,343.8 A

475 kW

4,947.9 A

2,474 A

500 kW

5,208.3 A

2,604.2 A

525 kW

5,468.8 A

2,734.4 A

550 kW

5,729.2 A

2,864.6 A

575 kW

5,989.6 A

2,994.8 A

600 kW

6,250 A

3,125 A

625 kW

6,510.4 A

3,255.2 A

650 kW

6,770.8 A

3,385.4 A

675 kW

7,031.3 A

3,515.6 A

700 kW

7,291.7 A

3,645.8 A

725 kW

7,552.1 A

3,776 A

750 kW

7,812.5 A

3,906.3 A

775 kW

8,072.9 A

4,036.5 A

800 kW

8,333.3 A

4,166.7 A

825 kW

8,593.8 A

4,296.9 A

850 kW

8,854.2 A

4,427.1 A

875 kW

9,114.6 A

4,557.3 A

900 kW

9,375 A

4,687.5 A

925 kW

9,635.4 A

4,817.7 A

950 kW

9,895.8 A

4,947.9 A

975 kW

10,156 A

5,078.1 A

1000 kW

10,417 A

5,208.3 A

Three Phase AC Kilowatts to Amps (kW to Amps).

Three phase kilowatts to amps (kW to amps) at a P.F. of 0.95.

KILOWATT

AMPS AT 208VAC

AMPS AT 280VAC

AMPS AT 415VAC

AMPS AT 440VAC

AMPS AT 690VAC

1.0 kW

2.76 A

2.17 A

1.46 A

1.38 A

0.88 A

1.1 kW

3.04 A

2.39 A

1.61 A

1.52 A

0.97 A

1.5 kW

4.14 A

3.26 A

2.20 A

2.07 A

1.32 A

2.0 kW

5.53 A

4.34 A

2.93 A

2.76 A

1.76 A

2.2 kW

6.08 A

4.78 A

3.22 A

3.04 A

1.94 A

3.0 kW

8.29 A

6.51 A

4.39 A

4.14 A

2.64 A

4.0 kW

11.05 A

8.68 A

5.86 A

5.53 A

3.52 A

5.5 kW

15.19 A

11.94 A

8.05 A

7.60 A

4.84 A

7.5 kW

20.72 A

16.28 A

10.98 A

10.36 A

6.61 A

11.0 kW

30.39 A

23.88 A

16.11 A

15.19 A

9.69 A

15.0 kW

41.44 A

32.56 A

21.97 A

20.72 A

13.21 A

18.5 kW

51.11 A

40.16 A

27.09 A

25.55 A

16.29 A

22.0 kW

60.78 A

47.75 A

32.22 A

30.39 A

19.38 A

30.0 kW

82.88 A

65.12 A

43.93 A

41.44 A

26.42 A

37.0 kW

102.21 A

80.31 A

54.19 A

51.11 A

32.59 A

45.0 kW

124.31 A

97.67 A

65.90 A

62.16 A

39.64 A

55.0 kW

151.94 A

119.38 A

80.55 A

75.97 A

48.44 A

75.0 kW

207.19 A

162.79 A

109.84 A

103.59 A

66.06 A

90.0 kW

248.63 A

195.35 A

131.80 A

124.31 A

79.27 A

110.0 kW

303.88 A

238.76 A

161.09 A

151.94 A

96.89 A

132.0 kW

364.65 A

286.51 A

193.31 A

182.33 A

116.27 A

160.0 kW

442.00 A

347.29 A

234.32 A

221.00 A

140.93 A

200.0 kW

552.50 A

434.11 A

292.89 A

276.25 A

176.16 A

250.0 kW

690.63 A

542.64 A

366.12 A

345.32 A

220.20 A

315.0 kW

870.19 A

683.72 A

461.31 A

435.10 A

277.45 A

355.0 kW

980.70 A

770.55 A

519.89 A

490.35 A

312.69 A

400.0 kW

1105.01 A

868.22 A

585.79 A

552.50 A

352.32 A

500.0 kW

1381.26 A

1085.28 A

732.23 A

690.63 A

440.40 A

560.0 kW

1547.01 A

1215.51 A

820.10 A

773.51 A

493.25 A

630.0 kW

1740.39 A

1367.45 A

922.62 A

870.19 A

554.91 A

710.0 kW

1961.39 A

1541.09 A

1039.77 A

980.70 A

625.37 A

800.0 kW

2210.02 A

1736.44 A

1171.58 A

1105.01 A

704.64 A

900.0 kW

2486.27 A

1953.50 A

1318.02 A

1243.14 A

792.72 A

1000.0 kW

2762.52 A

2170.55 A

1464.47 A

1381.26 A

880.80 A

Frequently Asked Questions

How do I convert kW to amps?

We can use the basic power formula to convert kilowatts to amps which is I = P / V, where I is current, P is power, and V is voltage. The power 1 kW means 1000 watts.

What amp is 3kw?

3kw is just over 13 amp 3000/230 = 13.04 amps and given the circuit is a radial fed with a 16 amp breaker with nothing else on it, the fcu is doing nothing of use and is un-necessary. Also adding 3kw heaters onto a ring will likely overload it.

What is 3000 watts in amps?

If we have 3000 Watt power it means that we have 25 Amps, if we use 120 V.

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