A gibibyte (GiB) is a unit of measurement in computers and similar electronic devices. One gibibyte holds 1024 mebibytes (MiB). Some people call this number of bytes a gigabyte. This would be considered the binary equivalent to the base-10 gigabyte, which consists of exactly one billion bytes.
A gibibyte is equivalent to 230 bytes (1,073,741,824 bytes) while a gigabyte is 109 bytes (1,000,000,000 or a billion bytes)
1024 gibibytes make one tebibyte.