A ZettaBit, often abbreviated as "Zb" or "ZBit", is a decimal unit for measuring data volumes. One ZettaBit corresponds to 10²¹ bits, i.e. exactly 1,000,000,000,000,000,000,000,000 bits. It is one step above the ExaBit (Eb) and one step below the YottaBit (Yb) in the hierarchy of decimal system units.

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Table - Data volumes

File size Decimal Binary
1 Byte 8 Bit
1 KiloByte (KB) 1.000 Byte (B) 8.000 Bit
1 MegaByte (MB) 1.000 KiloByte (KB) 1.024 KibiByte (KiB)
1 GigaByte (GB) 1.000 MegaByte (MB) 1.024 MebiByte (MiB)
1 TeraByte (TB) 1.000 GigaByte (GB) 1.024 GibiByte (GiB)
1 PetaByte (PB) 1.000 TeraByte (TB) 1.024 TebiByte (TiB)
1 ExaByte (EB) 1.000 PetaByte (PB) 1.024 PebiByte (PiB)
1 ZettaByte (ZB) 1.000 ExaByte (EB) 1.024 ExbiByte (EiB)
1 YottaByte (YB) 1.000 ZettaByte (ZB) 1.024 ZebiByte (ZiB)

All information is without guarantee

As technology advances and data becomes more central to our daily lives, the introduction of units such as the ZettaBit has shown just how great our need for data storage really is. The ZettaBit illustrates the almost unimaginable amount of data that is generated and stored today.

Conversion into other data units

To illustrate the impressive size of a ZettaBit compared to other common data units:

  • Bit

    • 1 ZettaBit (Zb) = 1,000,000,000,000,000,000,000,000,000 bits
  • Byte

    • Since 1 byte = 8 bits:
    • 1 Zb = 1,000,000,000,000,000,000,000 bits / 8 = 125,000,000,000,000,000,000,000 bytes
  • Kilobit (Kb)

    • 1 Zb = 1,000,000,000,000,000,000,000 kilobits
  • Megabit (Mb)

    • 1 Zb = 1,000,000,000,000,000 megabits
  • Gigabit (Gb)

    • 1 Zb = 1,000,000,000,000 gigabits
  • Terabit (Tb)

    • 1 Zb = 1,000,000,000 terabits
  • Petabit (Pb)

    • 1 Zb = 1,000,000 petabits
  • Exabit (Eb)

    • 1 Zb = 1,000 exabits

While the ZettaBit is an impressive indicator of the scale of data that can be stored in some of the world's largest data centers and networks, it is a long way off for everyday use. Nevertheless, it gives us an insight into the potential of future technological developments and the challenges associated with storing and processing such volumes of data

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