## How to convert kilowatts to joules

How to convert electric power in kilowatts (kW) to energy in joules (J).

You can calculate joules from kilowatts and seconds, but you can't convert kilowatts to joules since kilowatt and joule units represent different quantities.

## Kilowatts to joules calculation formula

The energy

Ein joules (J) is equal to 1000 times the powerPin kilowatts (kW), times the time periodtin seconds (s):

E_{(J)}= 1000 ×P_{(kW)}×t_{(s)}So

joules = 1000 × kilowatts × seconds

or

J = 1000 × kW×s

## Example

What is the energy consumption of an electrical circuit that has power consumption of 3 kilowatts for time duration of 3 seconds?

E_{(J)}= 1000 × 3kW × 3s = 9000J

## See also