Joules to Kilojoules Converter
1 Joule = 0.001 Kilojoules
J
kJ
1 J = 0.001 kJ. To convert joules to kilojoules, multiply by 0.001; to convert back, multiply by 1,000.
Conversion formula
1 J = 0.001 kJ
To convert from Joules to Kilojoules, multiply the value in joules by 0.001.
| Joules (J) | Kilojoules (kJ) |
|---|---|
| 0.001 | 0.000001 |
| 0.01 | 0.00001 |
| 0.1 | 0.0001 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1000 | 1 |
1 joule in every energy unit
| Kilojoules | 0.001 kJ |
| Megajoules | 0.000001 MJ |
| Calories | 0.239006 cal |
| Kilocalories | 0.000239006 kcal |
| Watt-hours | 0.000277778 Wh |
| Kilowatt-hours | 2.77778e-7 kWh |
| British Thermal Units | 0.000947817 BTU |
Frequently Asked Questions
How many kilojoules are in 1 joule?
1 joule equals 0.001 kilojoules. So 10 joules are 0.01 kilojoules and 100 joules are 0.1 kilojoules.
How do I convert joules to kilojoules by hand?
Multiply the number of joules by 0.001. To go the other way, multiply kilojoules by 1,000 (or divide by 0.001).
How many joules are in 1 kilojoule?
1 kilojoule equals 1,000 joules.