How to convert Kilowatts to Joules

How to convert energy in Kilowatts (kW) in electric power to Joules (J).

It is possible to calculate joules from seconds and kilowatts, but you cannot convert kilowatts to joules since kilowatt and joule units represent different quantities.

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Kilowatts to Joules formula

The power P in kilowatts (kW) is equal to the energy E in joules (J) divided by 100 times the time period t in seconds (s):

P_(kW) = E_(J) / (1000 * t_(s))

So

Kilowatts = Joules / (1000 * seconds)

or

kW = J / (1000 * s)

Example

Find the power consumption of an electrical circuit that has an energy consumption of 90 joules for a time duration of 3 seconds.

P_(kW) = 90J / (1000 * 3s) = 0.03kW

Joules to kW ►

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