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The gigabyte is a multiple of the unit byte for digital information storage. The prefix giga means 109 in the International System of Units (SI), therefore 1gigabyte is 1000000000bytes.
Historically, the term has also been used in some fields of computer science and information technology to denote the gibibyte, or 1073741824 (10243 or 230) bytes.
the International Electrotechnical Commission has been promoting the use of the term gibibyte for the binary definition. This position is endorsed by other standards organizations including the IEEE, the International Committee for Weights and Measures (CIPM) and the U.S.National Institute of Standards and Technology (NIST), but the binary prefixes have seen limited acceptance. The JEDEC industry consortium continues to recommend the IEEE 100 nomenclature of using the metric prefixes kilo, mega and giga in their binary interpretation for memory manufacturing designations.
Multiples of bytes
| ||||
Name
(Symbol) |
Value
|
Name
(Symbol) |
Value
| |
kilobyte (kB)
|
103
|
210
|
kibibyte (KiB)
|
210
|
megabyte (MB)
|
106
|
220
|
mebibyte (MiB)
|
220
|
gigabyte (GB)
|
109
|
230
|
gibibyte (GiB)
|
230
|
terabyte (TB)
|
1012
|
240
|
tebibyte (TiB)
|
240
|
petabyte (PB)
|
1015
|
250
|
pebibyte (PiB)
|
250
|
exabyte (EB)
|
1018
|
260
|
exbibyte (EiB)
|
260
|
zettabyte (ZB)
|
1021
|
270
|
zebibyte (ZiB)
|
270
|
yottabyte (YB)
|
1024
|
280
|
yobibyte (YiB)
|
280
|
See also: Multiples of bits · Orders of magnitude of data
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