How much is 6649 Jamaican Dollar to New Belarusian Ruble? 139.44 New Belarusian Ruble is todays conversion result. International currency exchange rate for pair JMD to BYN for today is 0.0210. CNV.to is using the latest data from authority sources, data updates every minute. To calculate reversed currencies go to - 6649 BYN to JMD.