1 Dietary Calorie Is Equal To How Many Scientific Calories
The food calorie is sometimes capitalized as calorie to distinguish it from the chemistry calorie.
1 dietary calorie is equal to how many scientific calories. So for a full conversion you need to multiply the first by 4 184. In physics the term is only used to refer to the gram type while the dietary calorie is really a kilogram calorie or kilocalorie which is 1 000 times larger. I just found the answer studying for a physics test. The physics calorie represents an amount of energy needed to raise or lower one gram of liquid water by one centigrade degree.
It is equal to 4186 joules. So 1 calorie equals 1. The amount of energy required to warm 1 g of air free water from 14 5 c to 15 5 c at a constant pressure of 101 325 kpa 1 atm. How to convert calories to kilojoules.
However this capitalization is rarely observed in practice. Dietary calories are calculated based on values of different food components. 4 184 kilojoules 4 184 joule 1 food calorie 1kcal 1000 cal. That amount of energy is too small to conveniently describe the energy content of food so the.
Calorie 15 c calorie. 1kilojoule 1000 joules 0 239 calories 0 239 kcal 239 cal. The calorie measurement was first determined by a french physicist named nicolas clement in 1824. 4 184kj 1 food calorie.
So you need to multiply your kj value with 0 239 to obtain the number of kcal. They are both units of energy but the dietary calorie note the use of upper case c equals 1000 physics calories. Like other forms of energy food energy is expressed in calories or joules. A dietary calorie is equal to 1000 small calories and will raise the temperature of one kilogram of water one degree c 1 8 f dietary calories are calculated as a measure of the energy output in food.
The term calorie and kilocalorie are often used interchangeably but technically the calorie count you see on a food label is in calories uppercase or kilocalories. Some countries use the food calorie which is equal to 1 kilocalorie kcal or 1 000 calories. The dietary one should be written with a capital c this is only one way in which the two differ.