The result of your conversion between Calorie [nutritional] and zettajoule appears here
To convert between Calorie [nutritional] and Zettajoule you have to do the following:
First divide 4186.8 / 1.0e+21 = 0.
Then multiply the amount of Calorie [nutritional] you want to convert to Zettajoule, use the chart below to guide you.
Symbol: cal
No description
Symbol: zJ
No description