Zettabit

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.
Multiples of bits
Decimal
Value SI
1000103 kbitkilobit
10002106 Mbitmegabit
10003109 Gbitgigabit
100041012 Tbitterabit
100051015 Pbitpetabit
100061018 Ebitexabit
100071021 Zbitzettabit
100081024 Ybityottabit
Binary
Value IEC JEDEC
1024210 Kibitkibibit Kbitkilobit
10242220 Mibitmebibit Mbitmegabit
10243230 Gibitgibibit Gbitgigabit
10244240 Tibittebibit -
10245250 Pibitpebibit -
10246260 Eibitexbibit -
10247270 Zibitzebibit -
10248280 Yibityobibit -
See also
Nibble
Byte
Orders of magnitude of data

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.

See also

References
  1. The NIST Reference on Constants, Units, and Uncertainty: SI prefixes
  2. The NIST Reference on Constants, Units, and Uncertainty: Prefixes for binary multiples
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