Kilojoules to Joules Converter
Convert kilojoules to joules instantly. One kilojoule equals 1,000 joules, so you can type any value in kJ and read the answer in J. The page also…
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Convert kilojoules to joules instantly. One kilojoule equals 1,000 joules, so you can type any value in kJ and read the answer in J. The page also shows a conversion table and the exact formula used.
Worked example
Example calculated from the starting values. Enter your own values and press Calculate to get your result.
1 kJ = 1,000 J
With the default inputs (value in kilojoules = 1 kJ), the results are: joules 1,000 J.
Kilojoules to joules conversion table
Reference table based on the example values; it is not your calculation result.
| kilojoules (kJ) | joules (J) |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 100 | 100,000 |
| 500 | 500,000 |
| 1,000 | 1,000,000 |
Frequently asked questions
How many joules are in one kilojoule?
1 kilojoule = 1,000 joules.
What is the formula to convert kilojoules to joules?
Multiply the value in kilojoules by 1,000.
How do I convert joules back to kilojoules?
1 joule = 0.001 kilojoules.
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