Gigabyte Definition

The gigabyte is a unit of computer memory, equivalent to one billion bytes. Historically, the gigabyte and other units derived from the byte represented the byte's binary multiples, i.e. kilobyte was equivalent to 1024 bytes, megabyte to 1024 kilobytes, and gigabyte equaled 1024 megabytes, or 1,073,741,824 bytes. However, the convention today is that the standard prefixes refer to decimal multiples, while the names of the binary multiples are created using different prefixes (kibibyte, mebibyte, gibibyte, yobibyte, etc.)