1 Gigabyte [GB] is about a billion-character i. e. , 1000 MB or 1 thousand megabytesGigabyte is a common unit for modern hardware for example 4000 MB = 4 GBAn ordinary computer has 4 GB of RAM 256 GB of storageA DVD has a size 4. 7GBA flash drive has about 32 GB and a hard drive has 750 GB1 kilobyte (KB) is nearly about 1000 bytes. An ordinary Roman text requires about 2 kilobytes to storeA Terabyte (TB) of computer storage capacity that is nearly about 2 to the 40th power, or 10 to the 12th power. A Terabyte is approximately 1,024 gigabytes (GB)The megabyte (MB) is a multiple-unit byte. The word mega represents 1000000 (106) in the International System of Units (SI). Megabyte is also represented by 1000×1024 (1024000) bytes. Therefore, 1 Gigabyte represents one billion characters.