Difference between "mb" and "MB".

[zrob2012]

I never knew this...as I always assumed "mb" OR "MB" (still an M and a B) to mean Megabytes.
But recent research and findings have come to tell me, that professionally speaking there is a substantial difference between the two. By substantial I mean...

"mb" stands for millibit (thousandth of a bit...there being 8 bits in a byte).
"MB" stands for megabyte (equivalent, as we all know, to 1024 kilobytes).

So, for example, if you were to offer customers 500mb disk space, you are effectively only offering them 500 thousandths of a byte of space. That's so small you can't even squeeze an ASCII character in! One ASCII character takes up around 1 byte of space I believe...not entirely sure!).

But 500MB (capital M and capital B) is equal to 500 megabytes (or five hundred million bytes).

Personally, who will be so stupid to pick you up on this? They all know you mean MEGABYTES.
BUT, if you fancy being EXTRA PROFESSIONAL...it doesn't cost you anything to use capitals. 😉

 

[Nuke]

You've been trolled. Bits are so small that filesystems don't recognize them. Thus, you can't sell millibits. It's just megabytes.
However, I do believe that many hosts offer megabits in storage, due to bandwidth usually being measured in megabits, as well.

 

[rixopod]

Or.. MB is megabyte and Mb is the other one?

http://www.computerhope.com/jargon/m/mb.htm

 

[legalize]

Professionally speaking you wouldn't say "em bee" in a conversation so it shouldn't matter.

 

[Luke]

And then Mb is megabits.

 

[electroman]

MB is megabytes.

1 MB = 1024 KB

Mb is megabits

1 Mb = 1024/8 KB = 128 KB


500 MB = 500 MegaBytes
500 Mb = 62.5 MegaBytes

 

[Shahrier]

As the others said, MB is Megabytes and Mb is Megabits.

 

[Watch Me Sink]

Nobody would really sell a millibit of data. That's just being idiotic.