The calorie is a unit of energy that originated from the caloric theory of heat. [1] [2] The large calorie, food calorie, dietary calorie, kilocalorie, or kilogram calorie is defined as the amount of heat needed to raise the temperature of one liter of water by one degree Celsius (or one kelvin).

The energy contents of a given mass of food is usually expressed in the metric (SI) unit of energy, the joule (J), and its multiple the kilojoule (kJ); or in the traditional unit of heat energy, the calorie (cal).

The calorie is a pre-SI unit of energy, synonymous with heat. [source?] A calorie is defined as the amount of energy required to raise the temperature of one gram of water (specific heat capacity = 4,184 J kg-1 K-1) [1] by one K (= °C + 273). [2]

Calorie restriction (also known as caloric restriction or energy restriction) is a dietary regimen that reduces the energy intake from foods and beverages without incurring malnutrition. [1] [2] The possible effect of calorie restriction on body weight management, longevity, and aging-associated diseases has been an active area of research. [1]

La calorie est une unité « pratique » de quantité de chaleur adoptée et encore utilisée par des chimistes, thermiciens, frigoristes et diététiciens. La calorie n'a jamais fait partie des unités du Système international d'unités (SI).

The tables below include tabular lists for selected basic foods, compiled from United States Dept. of Agriculture (USDA) sources. Included for each food is its weight in grams, its calories, and (also in grams,) the amount of protein, carbohydrates, dietary fiber, fat, and saturated fat. [1] .

2025年1月9日 · calorie, a unit of energy or heat variously defined. The calorie was originally defined as the amount of heat required at a pressure of 1 standard atmosphere to raise the temperature of 1 gram of water 1° Celsius.

"A calorie is a calorie" is a tautology used to convey the concept that sources of dietary calories are interchangeable. This concept has been subject to debate since its emergence in the early 19th century.

A calorie can be any of two units of heat or food energy ("small" and "large"). The word may also refer to: Calories a 1951 novel by L. Sprague deCamp; Calorie Kun Vs. Moguranian, a video game; Calorie restriction, a dietary regime; Calorie count laws for restaurant chains; Empty calorie, calorie provided by food without other essential nutrients

2025年1月9日 · calorie (plural calories) Kilogram calorie or large calorie. A unit of energy 1000 times larger than the gram calorie. It is equivalent to the gram kilocalorie, about 4.2 kilojoules.