A gigabyte is a measure of computer memory or disk space consisting of about one billion bytes (a thousand megabytes). The actual value is 1,073,741,824 bytes (1024 megabytes).allthingsphotography
Abbreviated as GB or Gb, a gigabyte is 1024 megabytes. In conversation, a gigabyte is often called a gig.
A gigabyte (gb) is a unit of information equal to 1,024 megabytes or approximately 1,000,000,000 bytes.
A unit of computer memory equivalent to 1024 megabytes (or one billion bytes).