define gigabytes
Orders of magnitude of data. The gigabyte (/ËÉ¡ÉªÉ¡ÉbaÉªt/ GIG-É-byt or /ËdÊÉªÉ¡ÉbaÉªt/) is a multiple of the unit byte for digital information. The prefix giga means 109 in the International System of Units (SI), therefore one gigabyte is 1000000000bytes. The unit symbol for the gigabyte is GB. This definition is used in all contexts of science, engineering, business, and many areas of computing, including hard drive, solid state drive, and tape capacities, as well as data transmission speeds.