kW to kJ calculator

Enter the power in kilowatts (kW), time period in seconds (s), then press the Calculate button to get the result in kilojoules (kJ).

kW to kJ calculation

Power in kW
Time period in sec

E(kJ) = P(kW) × t(s)

The energy E in kilojoules (kJ) is equal to the power P in kilowatts (kW), multiplied by the time period t in seconds (s).