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Zebibyte (ZiB)

Unit of Digital Information Storage
Zebibyte 270 Bytes
1024 Exbibyte
SI IEC
Decimal Binary
kilobyte kB 103
megabyte MB 106
gigabyte GB 109
terabyte TB 1012
petabyte PB 1015
exabyte EB 1018
zettabyte ZB 1021
yottabyte YB 1024
kibibyte KiB 210
mebibyte MiB 220
gibibyte GiB 230
tebibyte TiB 240
pebibyte PiB 250
exbibyte EiB 260
zebibyte ZiB 270
yobibyte YiB 280
(larger units were proposed but have not yet formally been adopted by the BIPM)

A Zebibyte (ZiB), derived from zeta-binary-byte, is a unit of digital information storage equal to 1024 exbibyte. This is in contrast to a zettabyte, meaning 1000 exabyte. The unit was established by the International Electrotechnical Commission in 1998 to differentiate units in base 10 from units in base 2. IEC formally added it to IEC 60027-2 which was later superseded by IEC 80000-13.


Equation 1 ZiB equals 1 024 EiB equals 2 Superscript 70 Baseline bytes equals 1 180 591 620 717 411 303 424 bytes equals 9 444 732 965 739 290 427 392 bits