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Kilocalorie (kcal)
British Thermal Unit (BTU)
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Kilocalorie (kcal)
Kilocalorie (kcal) — 1000 calories or 4184 joules, commonly used to denote food energy content.
British Thermal Unit (BTU)
British Thermal Unit (BTU) — a unit of energy used in the US and UK, approximately equal to 1055 joules.