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Marylou Monaghan's List: Reference
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Multiples of bytes SI decimal prefixes IEC binary prefixes Name
(Symbol)Standard
SIBinary
usageRatio
SI/BinaryName
(Symbol)Value kilobyte (kB) 103 210 0.9766 kibibyte (KiB) 210 megabyte (MB) 106 220 0.9537 mebibyte (MiB) 220 gigabyte (GB) 109 230 0.9313 gibibyte (GiB) 230 terabyte (TB) 1012 240 0.9095 tebibyte (TiB) 240 petabyte (PB) 1015 250 0.8882 pebibyte (PiB) 250 exabyte (EB) 1018 260 0.8674 exbibyte (EiB) 260 zettabyte (ZB) 1021 270 0.8470 zebibyte (ZiB) 270 yottabyte (YB) 1024 280 0.8272 yobibyte (YiB) 280 See also: Multiples of bits ยท Orders of magnitude of data
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[hide][edit] Definition
The term "megabyte" is commonly used to mean either 10002 bytes or 10242 bytes. This originated as compromise technical jargon for the byte multiples that needed to be expressed by the powers of 2 but lacked a convenient name. As 1024 (210) approximates 1000 (103), roughly corresponding SI multiples began to be used for binary multiples. By the end of 2007, standards and government authorities including IEC, IEEE, EU, and NIST proposed standards for binary prefixes and requiring the use of megabyte to strictly denote 10002 bytes and mebibyte to denote 10242 bytes. This is reflected in an increasing number of software projects using the new definitions, but some file managers still show file sizes using the binary interpretation (10242 bytes). The term remains ambiguous and it can follow any one of the
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Mar 06, 11
Useful for finding out how technology like codecs works.
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