A megabit is a unit of measurement for data size, most often used in discussions of data transfer. It takes eight megabits to make a megabyte.

Megabits (Mb) and megabytes (MB) sound identical, and their abbreviations use the exact same letters, but they certainly don't mean the same thing.

A bit is a binary digit or small unit of computerized data. A bit is really, really small -- smaller than the size of a single character in an email. For the sake of simplicity, think of a bit as the same size as a text character. A megabit, then, is approximately 1 million typed characters.

Here is where the formula 8 bits = 1 byte can be used to convert megabits to megabytes, and vice versa. Another way to look at it is that a megabit is 1/8 of a megabyte, or that a megabyte is 8 times that of a megabit.

Since we know that a megabyte is 8 times what the megabit value is, we can easily figure the megabyte equivalent by multiplying the megabit number by 8.

That's why:

One (1) megabit = 1/8 megabyte = 0.125 megabyte (1Mb = 1/8 MB = 0.125 M)

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