The result of your conversion between zettajoule and zettawatthour appears here
To convert between Zettajoule and Zettawatthour you have to do the following:
First divide 1.0e+21 / 3.6e+24 = 0.00027778
Then multiply the amount of Zettajoule you want to convert to Zettawatthour, use the chart below to guide you.
Symbol: zJ
No description
Symbol: ZWh
No description