Convert Kilojoules to Joules
1 kilojoule = 1,000 joules. Multiply the number of kilojoules by 1000.
Kilojoules to Joules table
| Kilojoules | Joules |
|---|---|
| 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 |
| 10 kJ | 10,000 J |
| 20 kJ | 20,000 J |
| 25 kJ | 25,000 J |
| 50 kJ | 50,000 J |
| 100 kJ | 100,000 J |
| 500 kJ | 500,000 J |
| 1000 kJ | 1,000,000 J |
About these units
The kilojoule (kJ) is a metric unit of energy & work, equal to 1,000 joules.
The joule (J) is an SI base or derived unit of energy & work.
Going the other way, 1 joule = 0.001 kilojoules. Diet calories, electricity bills in kilowatt-hours, boiler ratings in BTU and particle physics in electronvolts are all the same physical quantity. Convert energy across every scale from the atomic to the industrial.
Frequently asked
- How many joules are in a kilojoule?
- 1 kilojoule = 1,000 joules.
- How do you convert kilojoules to joules?
- Multiply the number of kilojoules by 1000.
- What is 10 kJ in J?
- 10 kJ = 10,000 J.