Full name: calorie [nutritional]
Plural form: calories
Category type: energy
Scale factor: 4186.8
The SI derived unit for energy is the joule.
1 joule is equal to 0.0002388458966275 calorie [nutritional].
Valid units must be of the energy type.
You can use this form to select from known units:
A calorie refers to a non-SI unit of energy. There are two common but different meanings: one is used in food and nutrition, the other was formerly widely used in chemistry, and a food calorie represents 1000 chemistry calories. The food calorie is sometimes capitalized as Calorie to distinguish it from the chemistry calorie; however, this capitalization is rarely observed in practice.