The gibibyte is a multiple of the unit byte for digital information. It is a member of the set of units with binary prefixes defined by the International Electrotechnical Commission (IEC). Its unit symbol is GiB.
The prefix gibi (symbol Gi) represents multiplication by 10243, therefore:
The gibibyte is closely related to the gigabyte (GB). The GB is defined as 109 bytes = 1000000000bytes, but has been used as a synonym for gibibyte in some contexts. 1GiB ≈ 1.074GB. 1024 gibibytes are equal to one tebibyte.
Binary prefixes are increasingly used in technical literature and open source software, and are a component of the International System of Quantities.