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Megabyte

A measure of computer storage capability; the equivalent of 1,000 bytes.
Megabyte

The megabyte is a multiple of the unit byte for digital information. Its recommended unit symbol is MB. The unit prefix mega is a multiplier of 1000000 (106) in the International System of Units (SI). Therefore, one megabyte is one million bytes of information. This definition has been incorporated into the International System of Quantities.

However, in the computer and information technology fields, several other definitions are used that arose for historical reasons of convenience. A common usage has been to designate one megabyte as 1048576bytes (220 B), a measurement that conveniently expresses the binary multiples inherent in digital computer memory architectures. However, most standards bodies have deprecated this usage in favor of a set of binary prefixes, in which this quantity is designated by the unit mebibyte (MiB). Less common is a convention that used the megabyte to mean 1000×1024 (1024000) bytes.

Key Terms

bytes information
international system units
mb
megabyte
multiple
multiplier
recommended unit symbol
si
unit byte digital information
unit prefix mega

Additional Resources

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Acronymn

MB

Synonymns

Megabyte
(none found)

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Last modified on June 28 2019
Content adapted from Wikipedia
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