How much is 8204 São Tomé and Príncipe Dobra to Mauritanian Ouguiya? 137.61 Mauritanian Ouguiya is todays conversion result. International currency exchange rate for pair STD to MRO for today is 0.0168. CNV.to is using the latest data from authority sources, data updates every minute. To calculate reversed currencies go to - 8204 MRO to STD.