From WikiChip
Gibibyte (GiB)

Unit of Digital Information Storage
Gibibyte 230 Bytes
1024 Mebibytes
SI IEC
Decimal Binary
kilobyte kB 103
megabyte MB 106
gigabyte GB 109
terabyte TB 1012
petabyte PB 1015
exabyte EB 1018
zettabyte ZB 1021
yottabyte YB 1024
kibibyte KiB 210
mebibyte MiB 220
gibibyte GiB 230
tebibyte TiB 240
pebibyte PiB 250
exbibyte EiB 260
zebibyte ZiB 270
yobibyte YiB 280
(larger units were proposed but have not yet formally been adopted by the BIPM)

A gibibyte (GiB), derived from giga-binary-byte, is a unit of digital information storage equal to 1024 mebibyte. This is in contrast to a gigabytes, meaning 1000 megabytes. The unit was established by the International Electrotechnical Commission in 1998 to differentiate units in base 10 from units in base 2. IEC formally added it to IEC 60027-2 which was later superseded by IEC 80000-13.


Equation 1 GiB equals 1 024 MiB equals 2 Superscript 30 Baseline bytes equals 1 073 741 824 bytes equals 8 589 934 592 bits