Calorie

A unit of energy in the British system of units. Still used to define the amount of energy amount of energy contained in foods. Defined as the amount of energy required to raise the temperature of 1 gram of water from 14.5°C to 15.5°C.

Conversions
1 calorie=4.184 J 1 calorie=3.087 ft lbwt
1 calorie=3.968x10-3Btu 1 kCal=4.184 kJ



Note: The calorific value of food and values presented on diet sheets are normally in kilo calories (kCal). However, people often say calories when talking about diet and actually mean kcal.
Examples
ActivitykCal used per hour
Calisthenics300
Digging360 to 420
Football500
Jogging 5 to 10 mph500 to 800
Sitting100
Sleeping60
Standing140
Swimming500 to 700
Walking 2 mph150 to 240
Walking 4 mph300 to 400

This is based on an average person weighing 68kg.

See also: Approximate Energy, Calorie per Second, Energy, Joule.

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Subjects: Units