British thermal units (IT) to liter-atmosphere converter above calculates how many liter-atmosphere are in 'X' British thermal units (IT) (where 'X' is the number of British thermal units (IT) to convert to liter-atmosphere). In order to convert a value from British thermal units (IT) to liter-atmosphere (from BTU to L atm) simply type the number of BTU to be converted to L atm and then click on the 'convert' button.