The result of your conversion between Q unit and Btu appears here
To convert between Q Unit and Btu you have to do the following:
First divide 1.0550559e+21 / 1055.0559 = 1000000000000000000.
Then multiply the amount of Q Unit you want to convert to Btu, use the chart below to guide you.
Symbol: Q unit
No description
Symbol: Btu
No description