How much is 3954 Japanese Yen to São Tomé and Príncipe Dobra? 565,936.97 São Tomé and Príncipe Dobra is todays conversion result. International currency exchange rate for pair JPY to STD for today is 143.1302. CNV.to is using the latest data from authority sources, data updates every minute. To calculate reversed currencies go to - 3954 STD to JPY.