Watts to kJ calculator

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

Watts to kJ calculation

kJ: 0

E(kJ) = P(W) × t(s) / 1000

The energy E in kilojoules (kJ) is equal to the power P in watts (W), multiplied by the time period t in seconds (s), divided by 1000.