Joules to Kilojoules Converter
1 joule = 0.001 kilojoules
1 kilojoule = 1,000 joules
How to convert joules to kilojoules
To convert joules to kilojoules, multiply the value in joules by 0.001.
kJ = J × 0.001
Example: 100 J × 0.001 = 0.1 kJ
Joules to Kilojoules conversion table
| Joule (J) | Kilojoule (kJ) |
|---|---|
| 1 J | 0.001 kJ |
| 2 J | 0.002 kJ |
| 3 J | 0.003 kJ |
| 4 J | 0.004 kJ |
| 5 J | 0.005 kJ |
| 6 J | 0.006 kJ |
| 7 J | 0.007 kJ |
| 8 J | 0.008 kJ |
| 9 J | 0.009 kJ |
| 10 J | 0.01 kJ |
| 12 J | 0.012 kJ |
| 15 J | 0.015 kJ |
| 20 J | 0.02 kJ |
| 25 J | 0.025 kJ |
| 30 J | 0.03 kJ |
| 40 J | 0.04 kJ |
| 50 J | 0.05 kJ |
| 60 J | 0.06 kJ |
| 70 J | 0.07 kJ |
| 75 J | 0.075 kJ |
| 80 J | 0.08 kJ |
| 90 J | 0.09 kJ |
| 100 J | 0.1 kJ |
| 150 J | 0.15 kJ |
| 200 J | 0.2 kJ |
| 250 J | 0.25 kJ |
| 500 J | 0.5 kJ |
| 1,000 J | 1 kJ |
About these units
Joule (J)
The joule (J) is a unit of energy in the International System of Units (SI). It is the reference unit for all energy conversions on this site.
Kilojoule (kJ)
The kilojoule (kJ) is a unit of energy in the International System of Units (SI). 1 kilojoule equals 1,000 joules. This value is exact by definition.
Frequently asked questions
What is 1 joule in kilojoules?
1 joule equals 0.001 kilojoules.
How do I convert joules to kilojoules?
To convert joules to kilojoules, multiply the value in joules by 0.001. Example: 100 J × 0.001 = 0.1 kJ
What is 100 J in kilojoules?
100 joules equals 0.1 kilojoules.