Watt hours to liter-atmosphere conversion calculator above calculates how many liter-atmosphere are in 'X' watt hours (where 'X' is the number of watt hours to convert to liter-atmosphere). In order to convert a value from watt hours to liter-atmosphere (from Wh to L atm) simply type the number of Wh to be converted to L atm and then click on the 'convert' button.