Exabit

The exabit is a multiple of the unit bit for digital information or computer storage. The prefix exa (symbol E) is defined in the International System of Units (SI) as a multiplier of 1018 (1 quintillion, short scale),[1] and therefore

1 exabit = 1018bits = 1000000000000000000bits = 1000 petabits.
Multiple-bit units
Decimal
Value  Metric 
1000 kbitkilobit
10002 Mbitmegabit
10003 Gbitgigabit
10004 Tbitterabit
10005 Pbitpetabit
10006 Ebitexabit
10007 Zbitzettabit
10008 Ybityottabit
Binary
Value  IEC  Legacy 
1024 Kibitkibibit KbitKbkilobit
10242 Mibitmebibit MbitMbmegabit
10243 Gibitgibibit GbitGbgigabit
10244 Tibittebibit TbitTbterabit
10245 Pibitpebibit —
10246 Eibitexbibit —
10247 Zibitzebibit —
10248 Yibityobibit —
Orders of magnitude of data

The exabit has the unit symbol Ebit or Eb.

The exabit is closely related to the exbibit, a unit multiple derived from the binary prefix exbi of the same order of magnitude,[2] which is equal to 260bits = 1152921504606846976bits, or approximately 15% larger than the exabit.

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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