How to convert energy of 1 kilojoules (kJ) to joules (J).
The energy E in joules (J) is equal to 1 kilojoule times 1000:
E(J) = 1kJ × 1000 = 1000J
So 1 kilojoule (kJ) is equal to 1000 joules (J):
1 kJ = 1000 J
How to convert kJ to joules ►