Gibibyte
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| SI prefixes | Binary prefixes (IEC 60027-2) |
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| Name (Symbol) |
Popular Usage |
Standard SI |
Name (Symbol) |
Value |
| kilobyte (kB) | 210 | 103 | kibibyte (KiB) | 210 |
| megabyte (MB) | 220 | 106 | mebibyte (MiB) | 220 |
| gigabyte (GB) | 230 | 109 | gibibyte (GiB) | 230 |
| terabyte (TB) | 240 | 1012 | tebibyte (TiB) | 240 |
| petabyte (PB) | 250 | 1015 | pebibyte (PiB) | 250 |
| exabyte (EB) | 260 | 1018 | exbibyte (EiB) | 260 |
| zettabyte (ZB) | 270 | 1021 | zebibyte (ZiB) | 270 |
| yottabyte (YB) | 280 | 1024 | yobibyte (YiB) | 280 |
A gibibyte (a contraction of giga binary byte) is a unit of information or computer storage, abbreviated GiB.
The gibibyte is closely related to the gigabyte, which can either be a synonym for gibibyte, or refer to 109 bytes = 1,000,000,000 bytes, depending on context (see binary prefix).
When a DVD is said to be 4,7gb (gb = gigabytes) the same DVD would be measured to be 4,38 in gibibytes. Why? Simply because the gibibytes gives you the exact space available. The formatting of the disc (making sectors for writing data) takes up some space and you will only be able to use 4,38gb.
