The result of your conversion between calorie [I.T.] and Btu appears here
To convert between Calorie [I.T.] and Btu you have to do the following:
First divide 4.1868 / 1055.0559 = 0.00396832
Then multiply the amount of Calorie [I.T.] you want to convert to Btu, use the chart below to guide you.
Symbol: cal
No description
Symbol: Btu
No description