Calories (15 °C) to liter-atmosphere converter above calculates how many liter-atmosphere are in 'X' calories (15 °C) (where 'X' is the number of calories (15 °C) to convert to liter-atmosphere). In order to convert a value from calories (15 °C) to liter-atmosphere (from cal to L atm) type the number of cal to be converted to L atm and then click on the 'convert' button.