## Convert zettajoule to calorie [15 °C]

 zettajoule calorie

 Did you mean to convert zettajoule to calorie [15 °C] calorie [I.T.] calorie [nutritional] calorie [thermochemical]

How many zettajoule in 1 calorie? The answer is 4.1858E-21. We assume you are converting between zettajoule and calorie [15 °C]. You can view more details on each measurement unit: zettajoule or calorie The SI derived unit for energy is the joule. 1 joule is equal to 1.0E-21 zettajoule, or 0.23890295761862 calorie. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between zettajoules and calories. Type in your own numbers in the form to convert the units!

## Quick conversion chart of zettajoule to calorie

1 zettajoule to calorie = 2.3890295761862E+20 calorie

2 zettajoule to calorie = 4.7780591523723E+20 calorie

3 zettajoule to calorie = 7.1670887285585E+20 calorie

4 zettajoule to calorie = 9.5561183047446E+20 calorie

5 zettajoule to calorie = 1.1945147880931E+21 calorie

6 zettajoule to calorie = 1.4334177457117E+21 calorie

7 zettajoule to calorie = 1.6723207033303E+21 calorie

8 zettajoule to calorie = 1.9112236609489E+21 calorie

9 zettajoule to calorie = 2.1501266185675E+21 calorie

10 zettajoule to calorie = 2.3890295761862E+21 calorie

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You can do the reverse unit conversion from calorie to zettajoule, or enter any two units below:

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## Definition: Zettajoule

The SI prefix "zetta" represents a factor of 1021, or in exponential notation, 1E21.

So 1 zettajoule = 1021 joules.

The definition of a joule is as follows:

The joule (symbol J, also called newton meter, watt second, or coulomb volt) is the SI unit of energy and work. The unit is pronounced to rhyme with "tool", and is named in honor of the physicist James Prescott Joule (1818-1889).

## 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.

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