# Amps to Kilowatts (kW) Electrical Conversion Calculator

Enter the current and voltage to convert amps to watts for DC and AC single and three-phase circuits.

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## How to Convert Amps to Kilowatts

To convert amps to kilowatts the power formula can be used, which states that I = P ÷ E, given that P is the power in watts, I is current in amps, and E is voltage in volts.

The amps to kilowatts formula derived from the power formula is:

P_{(kW)} = I_{(A)} × V_{(V)} / 1,000

Thus, the power *P* in kilowatts is equal to the current *I* in amps multiplied by the voltage *V* in volts, divided by 1,000.

**For example**, let’s find the kilowatts of power for a circuit with 12 amps of current at 120 volts

power = current × voltage ÷ 1,000

power = 12A × 120V ÷ 1,000

power = 1,440 ÷ 1,000

power = 1.44 kW

## Single-Phase AC Circuit Amps to Kilowatts Conversion

Conversion of amps to kilowatts for single-phase AC circuits using the power factor can be done with a slightly different formula.

P_{(kW)} = I_{(A)} × V_{(V)} × PF / 1,000

Thus, the power *P* in kilowatts is equal to the current *I* in amps multiplied by the voltage *V* in volts multiplied by the power factor PF, divided by 1,000. Try our power factor calculator to get the power factor if needed.

## Three-Phase AC Circuit Amps to Kilowatts Conversion

### Using Line to Line Voltage

The formula to convert amps to kilowatts for three-phase AC circuits where the line to line voltage is known is:

P_{(kW)} = I_{(A)} × V_{(V)} × PF × √3 / 1,000

Thus, the power *P* in kilowatts is equal to the current *I* in amps multiplied by the voltage *V* in volts multiplied by the power factor PF multiplied by the square root of 3, divided by 1,000.

### Using Line to Neutral Voltage

The formula to convert amps to kilowatts for three-phase AC circuits where the line to neutral voltage is known is:

P_{(kW)} = I_{(A)} × V_{(V)} × PF × 3 / 1,000

Thus, the power *P* in kilowatts is equal to the current *I* in amps multiplied by the voltage *V* in volts multiplied by the power factor PF multiplied by 3, divided by 1,000.

## How to Convert Amps and Ohms to Kilowatts

It’s also possible to convert amps to kilowatts using circuit resistance with this formula:

P_{(kW)} = I_{(A)}^{2} × R_{(Ω)} / 1,000

Thus, the power *P* in kilowatts is equal to the current *I* in amps squared multiplied by the resistance *R* in ohms, divided by 1,000.

You might also be interested in our amps to watts calculator.

## Equivalent Amps and Kilowatts at 120V AC

Current | Power | Voltage |
---|---|---|

1 Amps | 0.12 Kilowatts | 120 Volts |

2 Amps | 0.24 Kilowatts | 120 Volts |

3 Amps | 0.36 Kilowatts | 120 Volts |

4 Amps | 0.48 Kilowatts | 120 Volts |

5 Amps | 0.6 Kilowatts | 120 Volts |

6 Amps | 0.72 Kilowatts | 120 Volts |

7 Amps | .084 Kilowatts | 120 Volts |

8 Amps | 0.90 Kilowatts | 120 Volts |

9 Amps | 1.08 Kilowatts | 120 Volts |

10 Amps | 1.2 Kilowatts | 120 Volts |

11 Amps | 1.32 Kilowatts | 120 Volts |

12 Amps | 1.44 Kilowatts | 120 Volts |

13 Amps | 1.56 Kilowatts | 120 Volts |

14 Amps | 1.68 Kilowatts | 120 Volts |

15 Amps | 1.8 Kilowatts | 120 Volts |

20 Amps | 2.4 Kilowatts | 120 Volts |

25 Amps | 3 Kilowatts | 120 Volts |

30 Amps | 3.6 Kilowatts | 120 Volts |

35 Amps | 4.2 Kilowatts | 120 Volts |

40 Amps | 4.8 Kilowatts | 120 Volts |

45 Amps | 5.4 Kilowatts | 120 Volts |

50 Amps | 6 Kilowatts | 120 Volts |

60 Amps | 7.2 Kilowatts | 120 Volts |

70 Amps | 8.4 Kilowatts | 120 Volts |

80 Amps | 9.6 Kilowatts | 120 Volts |

90 Amps | 10.8 Kilowatts | 120 Volts |

100 Amps | 12 Kilowatts | 120 Volts |

## Equivalent Amps and Kilowatts at 240V AC

Current | Power | Voltage |
---|---|---|

1 Amps | 0.24 Kilowatts | 240 Volts |

2 Amps | 0.48 Kilowatts | 240 Volts |

3 Amps | 0.72 Kilowatts | 240 Volts |

4 Amps | 0.96 Kilowatts | 240 Volts |

5 Amps | 1.2 Kilowatts | 240 Volts |

6 Amps | 1.44 Kilowatts | 240 Volts |

7 Amps | 1.68 Kilowatts | 240 Volts |

8 Amps | 1.92 Kilowatts | 240 Volts |

9 Amps | 2.16 Kilowatts | 240 Volts |

10 Amps | 2.4 Kilowatts | 240 Volts |

11 Amps | 2.64 Kilowatts | 240 Volts |

12 Amps | 2.88 Kilowatts | 240 Volts |

13 Amps | 3.12 Kilowatts | 240 Volts |

14 Amps | 3.36 Kilowatts | 240 Volts |

15 Amps | 3.6 Kilowatts | 240 Volts |

20 Amps | 4.8 Kilowatts | 240 Volts |

25 Amps | 6 Kilowatts | 240 Volts |

30 Amps | 7.2 Kilowatts | 240 Volts |

35 Amps | 8.4 Kilowatts | 240 Volts |

40 Amps | 9.6 Kilowatts | 240 Volts |

45 Amps | 10.8 Kilowatts | 240 Volts |

50 Amps | 12 Kilowatts | 240 Volts |

60 Amps | 14.4 Kilowatts | 240 Volts |

70 Amps | 16.8 Kilowatts | 240 Volts |

80 Amps | 19.2 Kilowatts | 240 Volts |

90 Amps | 21.6 Kilowatts | 240 Volts |

100 Amps | 24 Kilowatts | 240 Volts |