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Calories are a unit of energy, but in diet and exercise, the term is used to mean kilocalories (kcal). Learn the difference and what these terms mean.
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Learn what a kcal is and how it relates to calories. Understand how food energy is measured using kcal and the difference between small and large calories.
Kcal and calories are a unit of measurement of energy in nutrition and exercise. The terms are used interchangeably in nutrition and do not need to be converted. Calories are referred to as either small (lowercase “c”) or large (uppercase “C”), with 1 large Calorie equalling 1,000 small calories.
The big calorie (1 Cal) indicates the amount of energy needed to raise the temperature of 1 kg of water by 1 celcius degree (1°C). The small calorie (1 cal) - shows the same amount for one 1 gram instead of 1 kilogram.
The unit is most commonly used to express food energy, namely the specific energy (energy per mass) of metabolizing different types of food. 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 ]
When you see "Calories" on a food label, it's "Kcal." Let's clarify the differences between the two, learn how to convert between them, and figure out daily calorie needs for managing weight. 🔑 Key Takeaways: The primary and most fundamental point is that 1 Kcal (kilocalorie) equals 1,000 calories.
One calorie (with a lower case c) is the amount of energy required to heat 1 gram of water by 1°C. A kilocalorie is 1000 calories, and Calorie (with a capital C) and kilocalorie (Kcal) are synonyms. On food labels, nutrition facts are in terms of kilocalories/Calories.
Convert kilocalories to calories - Energy Conversions. Online calculator to convert kilocalories to calories (kcal to cal) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Energy units.
To a scientist, a calorie is the quantity of heat (or energy) needed to boost the temperature of 1 ml of water by 1°C. A kilocalorie (kcal, often pronounced kay-cal) is the amount of heat required to raise the temperature of 1000 ml of water by 1°C. A kilocalorie is 1000 calories.