The result of your conversion between megaton [explosive] and petajoule appears here
To convert between Megaton [explosive] and Petajoule you have to do the following:
First divide 4.184e+15 / 1.0e+15 = 4.184
Then multiply the amount of Megaton [explosive] you want to convert to Petajoule, use the chart below to guide you.
Symbol: Mt
No description
Symbol: PJ
No description