›› Measurement unit: cal

Full name: calorie [15 °C]

Plural form: calories

Symbol: cal

Category type: energy

Scale factor: 4.1858

›› Similar units

calorie [15 °C]
calorie [I.T.]
calorie [nutritional]
calorie [thermochemical]
calorie [burned]

›› SI unit: joule

The SI derived unit for energy is the joule.
1 joule is equal to 0.23890295761862 cal.

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›› Definition: Calorie

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.

›› Sample conversions: cal

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cal to gram calorie
cal to megawatt hour
cal to tonne of coal equivalent
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cal to nanojoule
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