How much is 3157 Omani Rial to Mauritanian Ouguiya? 2,931,202.58 Mauritanian Ouguiya is todays conversion result. International currency exchange rate for pair OMR to MRO for today is 928.4772. CNV.to is using the latest data from authority sources, data updates every minute. To calculate reversed currencies go to - 3157 MRO to OMR.