How much is 2118 São Tomé and Príncipe Dobra to Malagasy Ariary? 422.05 Malagasy Ariary is todays conversion result. International currency exchange rate for pair STD to MGA for today is 0.1993. CNV.to is using the latest data from authority sources, data updates every minute. To calculate reversed currencies go to - 2118 MGA to STD.