The result of your conversion between petajoule and grain/ounce [UK] appears here
To convert between Petajoule and Grain/ounce [UK] you have to do the following:
First divide 1.0e+15 / ((0.45359237/16)*(192/175)/480)/(0.00454609/160) = 438480562404521.9375
Then multiply the amount of Petajoule you want to convert to Grain/ounce [UK], use the chart below to guide you.
Symbol: PJ
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Symbol: gr/oz
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