joule to kilojoule
Live joule (J) to kilojoule (kJ) converter. Plus a 10-value reference table and FAQs.
Conversion table
Ten sample values from joule to kilojoule. Use the converter above for arbitrary values.
| joule (J) | → | kilojoule (kJ) |
|---|---|---|
| 0.001 J | → | 1.0000e-6 kJ |
| 0.01 J | → | 1.0000e-5 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 |
| 100 J | → | 0.1 kJ |
| 1,000 J | → | 1 kJ |
About the joule
SI unit of energy. 1 N·m.
About the kilojoule
1000 J. Food labels in some countries.
How joule to kilojoule conversion works
Both units belong to Energy. Unitbox first expresses the input in the category reference unit (J), then expresses that same quantity in kilojoule.
The right unit depends on the convention used by your industry, country, instrument, or source document.
Unit definitions and conversion factors are maintained in the Unitbox methodology. Last reviewed with the current conversion dataset.
Frequently asked questions
Frequently Asked Questions
How do I convert joule to kilojoule?
Multiply the joule value by 0.001 to get it in kilojoule. For example, 10 J = 0.01 kJ.
What is 1 J in kJ?
1 J = 0.001 kJ.
What is 100 J in kJ?
100 J = 0.1 kJ.
What is the formula?
Linear: multiply by 0.001 (the unit factor ratio).
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