[program-l] Re: Converting between KB, MB,GB, and TB

  • From: QuentinC <quentinc@xxxxxxxxxxx>
  • To: program-l@xxxxxxxxxxxxx
  • Date: Mon, 12 Nov 2018 16:53:06 +0100

Hello,

In fact you have two scales. One based on 1024 and the other based on 1000. The difficulty is to know which one your program is using, because it isn't always obvious.

When talking about network, we talk about bits, kilobits, megabits, etc. in that context, usually kilo=1000 and mega=1000000.
When talking about memory or storage, we usually use kilo=1024, mega=1024^2, giga=1024^3 instead; but not always. Filezilla for example, give file sizes by default using the scale on 1000.
External disk vendors are also smart enough to confuse people, that's one of the reasons why when you buy an harddisk of 1 TB in fact you have not 1024^4 bytes of effective storage but only 1000^4 (the other reason is the size of the FAT taking space)
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