Food calories and kilojoules
The "Calories" on food labels are kilocalories (kcal). Since 1 kcal = 4.184 kJ, divide by 4.184 if a European or Australian label only lists kJ. This converter uses the thermochemical calorie of 4.184 J.
- 1 kWh = 3,600 kJ ≈ 860 kcal
- 1 BTU ≈ 1.055 kJ, used for heating and cooling capacity
- 1 Wh = 3,600 J