A gigabyte consists of roughly 1 billion bytes. To be exact, there are 1024 megabytes or 1,073,741,824 bytes in a gigabyte, but no one really cares. Because of the large size of today's hard disks, storage capacity is usually measured in gigabytes. Abbreviation: "GB".
GIGABYTE
Meaning of GIGABYTE in English
English glossary of computer and Internet terms. Английский глоссарий компьютерных и Интернет терминов. 2012