Convert Joules to Kilojoules

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

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

Going the other way? Convert kJ to J.

J to kJ table
Joules (J) Kilojoules (kJ)
0.1 J 0.0001 kJ
0.5 J 0.0005 kJ
1 J 0.001 kJ
2 J 0.002 kJ
5 J 0.005 kJ
10 J 0.01 kJ
20 J 0.02 kJ
50 J 0.05 kJ
100 J 0.1 kJ
500 J 0.5 kJ
1000 J 1 kJ