Why use MiB instead of MB?
The mebibyte was designed to replace the megabyte as it conflicted with the definition of the prefix mega in the International System of Units (SI).
Is A MiB bigger than a MB?
They are close in size, however. A mebibyte is equal to 220 or 1,048,576 bytes. A megabyte is equal to 106 1,000,000 bytes. One mebibyte equals 1.048576 megabytes.
When did MB become MiB?
Techopedia Explains Mebibyte (MiB)
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.