Convert Kilojoules to Joules

Kilojoules → Joules
kJ × 1000 = J J × 0.001 = kJ

To convert kilojoules (kJ) to joules (J), multiply the kilojoules value by 1000. 1 kJ = 1000 J, and 1 J = 0.001 kJ. The conversion is a linear scaling with no offset, so the same factor applies to any value.

Going the other way? Convert J to kJ.

kJ to J table
Kilojoules (kJ) Joules (J)
0.1 kJ 100 J
0.5 kJ 500 J
1 kJ 1000 J
2 kJ 2000 J
5 kJ 5000 J
10 kJ 10000 J
20 kJ 20000 J
50 kJ 50000 J
100 kJ 100000 J
500 kJ 500000 J
1000 kJ 1000000 J