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For example, fat (triglyceride lipids) contains 9 kilocalories per gram (kcal/g), while carbohydrates (sugar and starch) and protein contain approximately 4 kcal/g. [29] Alcohol in food contains 7 kcal/g. [30] The "large" unit is also used to express recommended nutritional intake or consumption, as in "calories per day".
Cal-15 (kg-cal-15) Cal 15: 1.0 Cal 15 (4.2 kJ) megacalorie (15°C) Mcal-15 (g-cal-15) Mcal 15: 1.0 Mcal 15 (4.2 MJ) kilocalorie (15°C) kcal-15 (g-cal-15)
≡ g 0 × 1 kg = 9.806 65 N: kip; kip-force: ... ≡ 1 kcal = 1000 cal = 4184 J: calorie (3.98 °C) cal 3.98 °C: ≈ 4.2045 J: calorie (15 °C) cal 15 °C: ≡ 4.1855 J
The grand calorie (kilocalorie, kilogram-calorie, food calorie, kcal, Cal) is 1000 small calories, 4184 J exactly. It was defined so that the specific heat capacity of water would be 1 Cal/(°C⋅kg). While these units are still used in some contexts (such as kilogram calorie in nutrition), their use is now deprecated in technical and ...
Other units still in use worldwide in some contexts are the kilocalorie per gram (Cal/g or kcal/g), mostly in food-related topics, and watt-hours per kilogram (W⋅h/kg) in the field of batteries. In some countries the Imperial unit BTU per pound (Btu/lb) is used in some engineering and applied technical fields. [1]
To facilitate evaluation by consumers, food energy values (and other nutritional properties) in package labels or tables are often quoted for convenient amounts of the food, rather than per gram or kilogram; such as in "calories per serving" or "kcal per 100 g", or "kJ per package". The units vary depending on country:
Cal-15 (kg-cal-15) Cal 15: 1.0 Cal 15 (4.2 kJ) megacalorie (15°C) Mcal-15 (g-cal-15) Mcal 15: 1.0 Mcal 15 (4.2 MJ) kilocalorie (15°C) kcal-15 (g-cal-15)
g/m3 kg/m3; g/m3 lb/ft3 (g/cm3 lb/cuft) ... The thermo-chemical calorie is the default definition. ... Mcal 1.0 Mcal (4.2 MJ) kilocalorie: kcal