Zettabit

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Multiples of bits
Decimal
Value SI
1000 103 kbit kilobit
10002 106 Mbit megabit
10003 109 Gbit gigabit
10004 1012 Tbit terabit
10005 1015 Pbit petabit
10006 1018 Ebit exabit
10007 1021 Zbit zettabit
10008 1024 Ybit yottabit
Binary
Value IEC JEDEC
1024 210 Kibit kibibit Kbit kilobit
10242 220 Mibit mebibit Mbit megabit
10243 230 Gibit gibibit Gbit gigabit
10244 240 Tibit tebibit -
10245 250 Pibit pebibit -
10246 260 Eibit exbibit -
10247 270 Zibit zebibit -
10248 280 Yibit yobibit -

The zettabit is a multiple of the unit bit for digital information or computer storage. The prefix zetta (symbol Z) is defined in the International System of Units (SI) as a multiplier of 1021 (1 sextillion, short scale),[1] and therefore

1 zettabit = 1021bits = 1000000000000000000000bits = 1000 exabits.

The zettabit has the unit symbol Zbit or Zb.

The zettabit is closely related to the zebibit, a unit multiple derived from the binary prefix zebi of the same order of magnitude,[2] which is equal to 270bits = 1180591620717411303424bits, or approximately 18% larger than the zettabit.

As the 1021 exceeds the range of a 64-bit integer, media of the size of zettabits can only be recorded on 128-bit systems.[citation needed]

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