The result of your conversion between yottawatthour and zettajoule appears here
To convert between Yottawatthour and Zettajoule you have to do the following:
First divide 3.6e+27 / 1.0e+21 = 3600000.
Then multiply the amount of Yottawatthour you want to convert to Zettajoule, use the chart below to guide you.
Symbol: YWh
No description
Symbol: zJ
No description