Gb may refer to any of the following:

  1. With a capital “b” a GB is a gigabyte. See our gigabyte definition for further information and size comparisons.

  2. With a lowercase “b” a Gb is a gigabit. See our gigabit definition for additional information.

  3. The Internet domain suffix .gb is short for Great Britain.

BIT, Byte, Computer abbreviations, Gbps, Gib, Giga, Hard drive, Measurements