define 1 kilowattand convert it into joules

When an electrical appliance consumes electrical energy at the rate of 1000 joules per second, its power is said to be 1 kilowatt.

1 kilowatt = 1000 J/s

Pls know that kilowatt cannot be converted to joules since kilowatt is a unit of power while joul is a unit of energy. Kilowatt can be converted to joules per second.