Calories per second to cubic feet de natural gas per second converter on this page calculates how many cubic feet de natural gas per second are in 'X' calories per second (where 'X' is the number of calories per second to convert to cubic feet de natural gas per second). In order to convert a value from calories per second to cubic feet de natural gas per second simply type the number of cal/s to be converted to cubic feet de natural gas per second and then click on the 'convert' button.