Common Converters

Convert Joules to Kilojoules

Use our accurate converter to change joules into kilojoules. This tool is simple to use and works instantly.

How to Calculate

To change joules to kilojoules, you just need to know the conversion factor.

Rule: 1 Joules = 0.001 Kilojoules

Joules to Kilojoules
Pre-defined calculator for direct joules to kilojoules conversion.
Joules (J)
0
Kilojoules (kJ)
Formula: 1 Joules = 0.001 Kilojoules

Unit Information

About Joules

Definition: The joule is the main unit for measuring energy.

History: It is named after a scientist who studied heat and motion.

Where it is used: Standard unit used in science and engineering to track work.

Joules to Kilojoules Conversion Table

Joules [j]Kilojoules [kj]
0.01 j0.00001 kj
0.1 j0.0001 kj
1 j0.001 kj
2 j0.002 kj
3 j0.003 kj
5 j0.005 kj
10 j0.01 kj
20 j0.02 kj
50 j0.05 kj
100 j0.1 kj
1000 j1 kj

How to Convert Joules to Kilojoules

Calculation: To convert joules to kilojoules, multiply the value by the conversion factor (0.001).

Example: convert 15 j to kj:
15 j = 15 × 0.001 kj = 0.015 kj

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