| Multiples of bits | ||||
|---|---|---|---|---|
| SI decimal prefixes | Binary usage |
IEC binary prefixes | ||
| Name (Symbol) |
Value | Name (Symbol) |
Value | |
| kilobit (kbit) | 103 | 210 | kibibit (Kibit) | 210 |
| megabit (Mbit) | 106 | 220 | mebibit (Mibit) | 220 |
| gigabit (Gbit) | 109 | 230 | gibibit (Gibit) | 230 |
| terabit (Tbit) | 1012 | 240 | tebibit (Tibit) | 240 |
| petabit (Pbit) | 1015 | 250 | pebibit (Pibit) | 250 |
| exabit (Ebit) | 1018 | 260 | exbibit (Eibit) | 260 |
| zettabit (Zbit) | 1021 | 270 | zebibit (Zibit) | 270 |
| yottabit (Ybit) | 1024 | 280 | yobibit (Yibit) | 280 |
| See also: Nibble · Byte · Multiples of bytes Orders of magnitude of data |
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The zebibit is a multiple of the bit, a unit of digital information storage, prefixed by the standards-based multiplier zebi (symbol Zi), a binary prefix meaning 270. The unit symbol of the zebibit is Zibit or Zib.
The zebi and yobi prefixes were originally not part of the system of binary prefixes, but were added by the International Electrotechnical Commission in August 2005.
The binary prefixes are not part of the International System of Units (SI).