Full name: calorie [15 °C]
Plural form: calories
Category type: energy
Scale factor: 4.1858
The SI derived unit for energy is the joule.
1 joule is equal to 0.23890295761862 cal.
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15 °C calorie: 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). Experimental values of this calorie ranged from 4.1852 J to 4.1858 J. The CIPM in 1950 published a mean experimental value of 4.1855 J, noting an uncertainty of 0.0005 J.