The result of your conversion between Btu [thermochemical] and petajoule appears here
To convert between Btu [thermochemical] and Petajoule you have to do the following:
First divide 1054.3503 / 1.0e+15 = 0.
Then multiply the amount of Btu [thermochemical] you want to convert to Petajoule, use the chart below to guide you.
Symbol: Btu
No description
Symbol: PJ
No description