The result of your conversion between zettajoule and yottajoule appears here
To convert between Zettajoule and Yottajoule you have to do the following:
First divide 1.0e+21 / 1.0e+24 = 0.001
Then multiply the amount of Zettajoule you want to convert to Yottajoule, use the chart below to guide you.
Symbol: zJ
No description
Symbol: yJ
No description