This is a bit complicated, as it depends on whether you are converting energy calories, or nutritional "Calories".
1 calorie = 0.0041858 for energy calories at 15 degrees Celsius:
https://www.convertunits.com/from/cal/to/kJ
But 1 Calorie = 4.1868 kJ for nutritional calories that you normally see on food labels:
https://www.convertunits.com/from/calorie+[nutritional]/to/kJ
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| 03/14/2009, 4:20 PM | cal to kJ |
| 03/19/2009, 12:35 PM | Re: cal to kJ |