kcal等于多少千焦

kilocalories (kcal) and kilojoules (kJ) are both units to measure energy, but they are not directly equivalent.

A kilogram (kg) of muscle burns approximately 70 calories per hour, while a similar mass of fat burns about 40 calories per hour. This means that if you burn 1000 calories through exercise or activity, you will have used 2.39 kg of muscle or 5.88 kg of fat to achieve this. Therefore, the relationship between kcal and kJ is not straightforward, as there are different factors at play in terms of how much energy is burned from different types of tissue.