How much is 9128 São Tomé and Príncipe Dobra to Sierra Leonean Leone? 8,590.40 Sierra Leonean Leone is todays conversion result. International currency exchange rate for pair STD to SLL for today is 0.9411. CNV.to is using the latest data from authority sources, data updates every minute. To calculate reversed currencies go to - 9128 SLL to STD.