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Energy
Kilojoules to Joules
Convert kilojoules (kJ) to joules (J). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 kJ = 1000 J
Kilojoules to Joules Conversion Table
Common values, ready to copy:
| kilojoules | joules |
|---|---|
| 1 kJ | 1000 J |
| 2 kJ | 2000 J |
| 5 kJ | 5000 J |
| 10 kJ | 10000 J |
| 25 kJ | 25000 J |
| 50 kJ | 50000 J |
| 100 kJ | 100000 J |
| 1,000 kJ | 1.0000e+6 J |
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Formula
joules = kilojoules × 1000
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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