The yottabit is a multiple of the unit bit for digital information or computer storage. The prefix yotta (symbol Y) is defined in the International System of Units (SI) as a multiplier of 1024 (1 septillion, short scale),[1] and therefore
- 1 yottabit = 1024bits = 1000000000000000000000000bits = 1000 zettabits.[2]
The yottabit has the unit symbol Ybit or Yb.
The yottabit is closely related to the yobibit, a unit multiple derived from the binary prefix yobi of the same order of magnitude,[3] which is equal to 280bits = 1208925819614629174706176bits, or approximately 21% larger than the yottabit.
As this exceeds the range of a 64-bit integer, yobabit can only be recorded on 128-bit systems.
See also
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