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Joules to Kilojoules
Convert joules (J) to kilojoules (kJ). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 J = 0.001 kJ
Joules to Kilojoules Conversion Table
Common values, ready to copy:
| joules | kilojoules |
|---|---|
| 1 J | 0.001 kJ |
| 2 J | 0.002 kJ |
| 5 J | 0.005 kJ |
| 10 J | 0.01 kJ |
| 25 J | 0.025 kJ |
| 50 J | 0.05 kJ |
| 100 J | 0.1 kJ |
| 1,000 J | 1 kJ |
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Formula
kilojoules = joules × 0.001
Energy uses the SI joule. Food calories (kcal) are 1,000 small calories: 1 kcal = 4,184 J. 1 kWh = 3.6 MJ = 3,600,000 J. 1 BTU = 1,055.06 J.
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