Units of measurement
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Calorie (cal)
Kilocalorie (kcal)
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Calorie (cal)
Calorie (cal) — a unit of energy used in nutrition, approximately equal to 4.184 joules.
Kilocalorie (kcal)
Kilocalorie (kcal) — 1000 calories or 4184 joules, commonly used to denote food energy content.