One of the most frequently needed electricity conversions is kW (kilowatts) to Amps.

- kW is a unit of measure of electrical power (wattage).
- Ampere (A) is a unit of measure of electrical current (amperage).

To convert kW to Amps, we can use the equation for electrical power:

**Power (kW) = I (A) * V (V)**

You can use this kilowatt to amperes converter. Below you will find 3 examples of a kW to Amps conversion for:

- 4 kW central air conditioner (220 V).
- 1 kW washing machine (220 V).
- 36 kW tankless electric water heater (240 V).

Table of Contents

## kW To Amps Calculator

Using the calculator, we have calculated a kW to Amps table:

Power (kW) | Voltage (220 V) | Amperage (A) |
---|---|---|

1 kW to Amps: | 220 V | 4.55 Amps |

2 kW to Amps: | 220 V | 9.09 Amps |

4 kW to Amps: | 220 V | 18.18 Amps |

6 kW to Amps: | 220 V | 27.27 Amps |

9 kW to Amps: | 220 V | 40.91 Amps |

18 kW to Amps: | 220 V | 81.82 Amps |

27 kW to Amps: | 220 V | 122.73 Amps |

36 kW to Amps: | 220 V | 163.64 Amps |

45 kW to Amps: | 220 V | 227.27 Amps |

### Example 1: How Many Amps Does 4 kW Central AC Unit Draw?

For example, let’s take a 36,000 BTU central air conditioner with a power output of 4 kW. The electrical circuit can provide 220 V voltage. How many amps does the 4 kW AC unit draw? Let’s use the kW to Amps calculator:

We can see that the 4 kW air conditioner needs 18.18 amps to function properly.

### Example 2: 1 kW Washing Machine To Amps

Most washing machines draw about 1,000 W or 1 kW of electrical power. You don’t need upgrades to your electrical circuit for an average washing machine. Here is how many amps it draws:

1 kW washing machine needs about 4.55 Amps to run.

### Example 3: 36 kW Electrical Tankless Water Heater

Tankless water heaters are notorious for needing a huge amount of electrical current (amps). For example, you have 9 kW, 18 kW, 27 kW, and even 36 kW tankless water heaters that run on electricity. Usually, they run on 240 V and can reach up to 200 amps.

For this example, let’s take a bigger 36 kW tankless water heater on 240 V potential:

As you can see, 36 kW converts to 150 amps. This is some serious amperage; for such a device, you would need 4 x 40 A breakers.

If you have any questions about kW to amps calculation, you can pose them in the comments below.

Thank you for everything.

How much Amps does 3 KW Instant Geyser draws ?

Hello there, it’s a 3,000 W unit. If you use 115V, it draws 3,000W / 115V = 26 amps. Most probably, it uses 230V, thus the total amps draw is 13 amps.

I understand Volts x Amps = Watts.

QUESTION.

i Solar panel giving 300watta @ 6 Volts =50Amps (A big cable) Obviously 300W Devided by 230= 1.3 Amps, What percentage of power will I loose passing through the Inverter?

Hello David, your calculations are on point. Inverter efficiency is another matter; I’m afraid we don’t have adequate knowledge to answer what % of power you’ll lose passing it the inverter.

I’ve measured a total KW load of 8.94 on our combined 120/220 volts (220 water heater) on our 100 amp service. Using the Calculator for 120v it says 75 Amp. We are looking at a 19KW – 51 Amp auxiliary generator. Will this work or will there be issues due to the 51 Amp rating of the generator?

Hello Richard, the new 19kW – 51 Amp generator has high voltage. 19,000W / 51A = 373V. If it can put out 19 kW and has proper voltage reduction to 220V or 120V, it shouldn’t be a problem to power an 8.94 kW water heater.