The result of your conversion between petajoule and ounce/cubic foot appears here
To convert between Petajoule and Ounce/cubic Foot you have to do the following:
First divide 1.0e+15 / (0.45359237/16)/((0.0037854118/231)*1728) = 998847373440194.625
Then multiply the amount of Petajoule you want to convert to Ounce/cubic Foot, use the chart below to guide you.
Symbol: PJ
No description
Symbol: oz/fm³
No description