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