Convert joule (J) to kilojoule (kJ).
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Kilojoule to Joule Converter (kJ to J)
Convert kilojoule (kJ) to joule (J).Unit Converter · Energy
Quick answer
1 kilojoule (kJ) is equal to 1,000 joules (J). 1 joule (J) is equal to 0.001 kilojoules (kJ).
To convert kJ to J, multiply the value in kilojoules by 1,000. For example, 10 kJ = 10,000 J, and 100 kJ = 1,00,000 J.
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How to convert kilojoules to joules
How many joules are in a kilojoule? 1 kilojoule is 1,000 joules. This free kJ to J converter and kilojoule to joule calculator gives the answer instantly for any value.
To convert kilojoule (kJ) to joule (J), multiply the value in kilojoules by 1,000.
J = kJ × 1,000
- 1
Take the value in kilojoules
For example, 25 kJ.
- 2
Multiply by 1,000
25 × 1,000.
- 3
Read the answer in joules
25 kJ = 25,000 J.
Kilojoule to Joule conversion table
Common values from 1 to 1,000 kilojoules converted to joules.
| Kilojoule (kJ) | Joule (J) |
|---|---|
| 1 kJ | 1,000 J |
| 2 kJ | 2,000 J |
| 3 kJ | 3,000 J |
| 4 kJ | 4,000 J |
| 5 kJ | 5,000 J |
| 6 kJ | 6,000 J |
| 7 kJ | 7,000 J |
| 8 kJ | 8,000 J |
| 9 kJ | 9,000 J |
| 10 kJ | 10,000 J |
| 15 kJ | 15,000 J |
| 20 kJ | 20,000 J |
| 25 kJ | 25,000 J |
| Kilojoule (kJ) | Joule (J) |
|---|---|
| 30 kJ | 30,000 J |
| 40 kJ | 40,000 J |
| 50 kJ | 50,000 J |
| 60 kJ | 60,000 J |
| 70 kJ | 70,000 J |
| 75 kJ | 75,000 J |
| 80 kJ | 80,000 J |
| 90 kJ | 90,000 J |
| 100 kJ | 1,00,000 J |
| 250 kJ | 2,50,000 J |
| 500 kJ | 5,00,000 J |
| 1,000 kJ | 10,00,000 J |
About kilojoules and joules
Kilojoule (kJ)
A kilojoule (kJ) is 1,000 joules. Food energy on nutrition labels is often shown in kJ as well as kcal.
Joule (J)
The joule (J) is the SI unit of energy: the work done by a force of one newton over one meter. One watt is one joule per second.
kJ to J: common questions
- How many joules are in 1 kilojoule?
- 1 kilojoule (kJ) is equal to 1,000 joules (J). In short: 1 kJ = 1,000 J.
- How do I convert kilojoules to joules?
- To convert kJ to J, multiply the value in kilojoules by 1,000. For example, 5 kJ = 5,000 J.
- How do I convert joules to kilojoules?
- To convert J to kJ, divide the value in joules by 1,000. Or open the Joule to Kilojoule converter, which does it for you.
- What is 10 kJ in J, and what is 100 kJ?
- 10 kJ = 10,000 J, and 100 kJ = 1,00,000 J. The table above lists more values from 1 to 1,000.
- Is this kJ to J converter accurate?
- Yes. It uses the exact conversion factor and shows results to as many as 8 decimal places, so you can rely on it for study, work and everyday measuring.
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