The gibibyte is very closely related to the gigabyte (GB). The GB is defined by the IEC as 109 bytes = 1000000000bytes, 1GiB ≈ 1.074GB. 1024 gibibytes are equal to one tebibyte. Gigabyte and GB are customarily used to mean 10243 (230, binary 01000000000000000000000000000000) bytes in the context of computer memory, although not in the context of data transmission and not necessarily in the context of hard drive size. The word gibibyte was coined in 1998.