How to convert kW to Joules

kW to joules calculation formula

E(J) = 1000 x P(kW) × t(s)

The energy E in joules (J) is equal to 1000, multiplied by the power P in kilowatts (kW), multiplied by the time period t in seconds (s).


J = 1000 x kW x s
joule = 1000 x kilowatt x second

For example:

Power (P) = 2,5kW
Time period = 5 seconds

Energy (E) = 1000 x 2,5kW x 5s = 12500J