How much is 4208 Russian Ruble to New Belarusian Ruble? 151.31 New Belarusian Ruble is todays conversion result. International currency exchange rate for pair RUB to BYN for today is 0.0360. CNV.to is using the latest data from authority sources, data updates every minute. To calculate reversed currencies go to - 4208 BYN to RUB.