Cal is a unit of heat (energy). Calorie (abbreviated as cal), transliterated from the English calorie, is defined as the amount of heat required to raise 1 gram of water by 1 degree Celsius under 1 atmospheric pressure; calorie (calorie) is an energy unit, and it is still. 1kj=1/4.186=0.2389kcal. 1. 1 kcal (kilocalorie) = 4186 j (joule) = 4.186 kj (kilojoule). 1 cal (calorie) = 4.2 j (joule) 2. kcal is also called kcal. The unit of heat is equal to 1000 cal, that is, the temperature of 1 kg of water increases by 1°C.
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