Joules to Kilojoules (J to kJ)
Convert joules to kilojoules with the calculator below. 1 joule equals 0.001 kilojoules.
Reverse: Kilojoules to Joules (KJ to Joules) →
How to convert joules to kilojoules
Divide the value in joules by 1000 (or multiply by 0.001). Formula: kJ = J / 1000.
1 J = 0.001 kJ1 kJ = 1000 J
Example
Convert 10 joules to kilojoules: 10 J = 0.01 kJ.
Joules to KJ conversion table
| Joules (J) | Kilojoules (kJ) |
|---|---|
| 0.1 J | 0.0001 kJ |
| 0.25 J | 0.00025 kJ |
| 0.5 J | 0.0005 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 |
| 75 J | 0.075 kJ |
| 100 J | 0.1 kJ |
| 250 J | 0.25 kJ |
| 500 J | 0.5 kJ |
| 1000 J | 1 kJ |
Convert joules to other units
- Joules to Calories
- Joules to Kcal
- Joules to Wh
- Joules to kWh
- Joules to BTU
- Joules to eV
- Joules to Foot Pounds
- Joules to Therms
Convert other units to kilojoules
Frequently asked questions
How many kilojoules are in 1 joule?
1 joule = 0.001 kilojoules.
How do you convert joules to kilojoules?
Divide the value in joules by 1000 (or multiply by 0.001). Formula: kJ = J / 1000.
How many joules are in 1 kilojoule?
1 kilojoule = 1000 joules.