How Many Amps Are in a kW?

If you’re wondering how many amps are in a kW, there isn’t one fixed answer. The number of amps depends on the voltage of the electrical system.

For a basic single-phase calculation:

Amps = kW × 1,000 ÷ Volts

How Many Amps Is 1 kW?

Here are a few common examples:

For example, at 240 volts:

1 × 1,000 ÷ 240 = 4.17 amps

So 1 kW at 240 V is approximately 4.17 amps, assuming a power factor of 1.

At 240 volts:

5 × 1,000 ÷ 240 = 20.83 amps

Therefore, 5 kW at 240 V is approximately 20.83 amps under the basic calculation.

Higher voltage means less current is needed to deliver the same amount of power.

For example:

For AC equipment such as motors, the actual current can also depend on the power factor and whether the system is single-phase or three-phase.

If you need to convert electrical current into kilowatts, you can use our Amps to kW Calculator for a quick calculation.

kW to amps:
Amps = kW × 1,000 ÷ Volts

Amps to kW:
kW = Amps × Volts ÷ 1,000

Always use the voltage and electrical specifications appropriate to your equipment when making real-world electrical calculations.