Megacalories to liter-atmosphere converter on this page calculates how many liter-atmosphere are in 'X' megacalories (where 'X' is the number of megacalories to convert to liter-atmosphere). In order to convert a value from megacalories to liter-atmosphere (from Mcal to L atm) just type the number of Mcal to be converted to L atm and then click on the 'convert' button.