Here is an example formula to use if you wish to estimate your bandwidth consumption when using Streaming services.
Example based on streaming one Channel at bitrate 256 kbps
((256kbps x 60sec)x60min)) = 921,600 kbps / 8 (to convert kb to KB) =115,200 KB / 1024 = 112.5 MB per Hour.
If your network bandwidth is limited to 20GB per month:
20GB = 20,480 MB / 112.5 MB = 182.04 hours of streaming (one Channel at 256 kbps)