gigabit [Gb] Unit Converter

Definition of gigabit [Gb] unit

A gigabit (Gb) is a unit of digital information equal to 1,000,000,000 bits in the decimal system. In some contexts, it is informally used for 2^30 bits, although that binary quantity is more accurately called a gibibit (Gib).

History of gigabit [Gb] unit

The bit originated in early computing as a contraction of “binary digit,” a term associated with information theorist Claude Shannon’s 1948 work. As data networks expanded, engineers adopted metric prefixes, making a gigabit equal to 10^9 bits under the International System of Units. Telecommunications standards commonly use gigabits for transmission rates, while storage manufacturers and software sometimes create confusion by mixing decimal and binary conventions. The binary prefix “gibi-” was introduced in 1998 to distinguish 2^30 bits, formally called a gibibit.

Applications of gigabit [Gb] unit

Today, gigabits are used primarily to describe network and internet speeds, such as 1 Gb/s broadband or 10 Gb/s Ethernet. They also appear in wireless standards, fiber-optic capacity, router specifications, and data-transfer testing. Because providers advertise rates in gigabits per second, users should divide by eight to estimate equivalent megabytes per second.

Complete list of gigabit [Gb] unit conversion