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Energy
Kilocalories to Kilojoules
Convert kilocalories (kcal) to kilojoules (kJ). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 kcal = 4.184 kJ
Kilocalories to Kilojoules Conversion Table
Common values, ready to copy:
| kilocalories | kilojoules |
|---|---|
| 1 kcal | 4.184 kJ |
| 2 kcal | 8.368 kJ |
| 5 kcal | 20.92 kJ |
| 10 kcal | 41.84 kJ |
| 25 kcal | 104.6 kJ |
| 50 kcal | 209.2 kJ |
| 100 kcal | 418.4 kJ |
| 1,000 kcal | 4184 kJ |
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Formula
kilojoules = kilocalories × 4.184
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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