How much is 3021 Eritrean Nakfa to New Belarusian Ruble? 658.93 New Belarusian Ruble is todays conversion result. International currency exchange rate for pair ERN to BYN for today is 0.2181. CNV.to is using the latest data from authority sources, data updates every minute. To calculate reversed currencies go to - 3021 BYN to ERN.