How Much Bandwidth Used in a 128k Radio Stream

How Many Megabytes in a 128k Music Stream?

How much bandwidth is consumed on your internet connection when you listen to online radio, or watch music videos and clips on Youtube?

Let’s start with the most popular stream rate for online radio and internet radio stations. 128kbps means 128 kilobits per second.

So how do we translate that into bandwidth on my internet connection?

Here’s the calculation:

128 x 1024 x 60 / 8 = 983,040 KB per minute (Kilobytes), which is about 1 MB (megabyte)

Short Answer
128k stream is…
About 1 Megabyte per minute
60 Megabytes per hour.
1.4 Gigabytes per day

So, for every 1 minute streamed on a 128k radio channel, you download approximately 1 megabyte. That’s not bad!

Here’s Explanation to the calculation:
128k equals 128 kilobits per second. (1024 bits in a kilobyte)
128 x 1024 x 60 seconds = 7,864,320 bits. There are 8 bits in a byte.
7,864,320 / 8 = 983,040 Kilobytes. (1 Megabyte is 1,024,000 bytes)

Bandwidth usage for other popular stream rates per hour (approximate and rounded to nearest half megabyte):
56kbps = 26 MB per hour
64kbps = 29.5 MB per hour
192kbps = 88.5 MB per hour
256kbps = 118 MB per hour

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