How much is 8517 São Tomé and Príncipe Dobra to Somali Shilling? 217.30 Somali Shilling is todays conversion result. International currency exchange rate for pair STD to SOS for today is 0.0255. CNV.to is using the latest data from authority sources, data updates every minute. To calculate reversed currencies go to - 8517 SOS to STD.