How much is 4220 Eritrean Nakfa to São Tomé and Príncipe Dobra? 6,268,613.07 São Tomé and Príncipe Dobra is todays conversion result. International currency exchange rate for pair ERN to STD for today is 1,485.4533. CNV.to is using the latest data from authority sources, data updates every minute. To calculate reversed currencies go to - 4220 STD to ERN.