The result of your conversion between attojoule and Btu [thermochemical] appears here
To convert between Attojoule and Btu [thermochemical] you have to do the following:
First divide 1.0e-18 / 1054.3503 = 0.
Then multiply the amount of Attojoule you want to convert to Btu [thermochemical], use the chart below to guide you.
Symbol: aJ
No description
Symbol: Btu
No description