What Does Mebibyte Mean?

A mebibyte (MiB) is a multiple of the unit byte. It represents a unit of digital information storage used to denote the size of data. It is equivalent to 220,or 1,048,576, bytes.


Techopedia Explains Mebibyte

Mebibyte was introduced to replace the use of megabyte in computer contextst, where it represents 220conflicting with the International System of Units (IS) definition of the term "mega." In other contexts, megabyte refers to 106 bytes.

Most operating systems use mebibytes to report file and storage sizes. Windows, for example, will report 220 bytes of file as 1 MB while reporting 106 as only 976 kB. The mebibyte prefix was created in December of 1998 by the International Electrotechnical Commission (IEC) to resolve the differences between these common usages.


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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…