Joule to kilojoule converter (J to kJ)
1 joule = 0.001 kilojoule · 1 kilojoule = 1,000 joule
joule to kilojoule formula
kilojoule = joule × 0.001
Worked example
10 joule = 10 × 0.001 = 0.01 kilojoule
Convert a list of values
Paste one value per line (a column from Excel works) · up to 100 lines
joule to kilojoule 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 |
| 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 |
| 80 J | 0.08 kJ |
| 90 J | 0.09 kJ |
| 100 J | 0.1 kJ |
| 200 J | 0.2 kJ |
| 250 J | 0.25 kJ |
| 500 J | 0.5 kJ |
| 1,000 J | 1 kJ |
About these units
- kilojoule (kJ)
- Used on food labels in some countries.
FAQ
How many kilojoule in 1 joule?
1 joule is 0.001 kilojoule.
How many joule in 1 kilojoule?
1 kilojoule is 1,000 joule.
What is the formula to convert joule to kilojoule?
kilojoule = joule × 0.001. For example, 10 joule = 10 × 0.001 = 0.01 kilojoule.
What is 10 joule in kilojoule?
10 joule = 0.01 kilojoule.
Convert joule to other units
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