Energy Converter
Result
... Joule = ... Kilojoule
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Joule to Kilojoule Converter
Use this page to convert joule values into kilojoule, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 J = 0.001 kJ
1 kJ = 1,000 J
Example: 120 J = 0.12 kJ
Joule
A joule is the work done by a force of one newton through one meter.
History: It is named after James Prescott Joule.
Current use: Joules are used in physics, engineering, and energy calculations.
Also written as J, joules.
Kilojoule
A kilojoule equals 1,000 joules.
History: It is a decimal multiple adopted for practical energy values.
Current use: Kilojoules are used in nutrition and industrial energy figures.
Also written as kJ, kilojoules.
Joule to Kilojoule table
| Joule [J] | Kilojoule [kJ] |
|---|
| 0.01 J | 0.00001 kJ |
| 0.1 J | 0.0001 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 |
Frequently asked questions
How many Kilojoule (kJ) are in one Joule (J)?
One Joule equals 0.001 Kilojoule.
How do you convert Joule to Kilojoule?
Multiply the Joule value by 0.001 to get the result in Kilojoule.
How do you convert Kilojoule back to Joule?
Multiply the Kilojoule value by 1,000 to get back to Joule.
What is 120 Joule in Kilojoule?
120 Joule equals 0.12 Kilojoule.
