Exabyte (EB)

ComputingCurrent unit

1,000 petabytes (10¹⁸ bytes). Used for global internet traffic and very large data centers.

1 exabyte = 1×10¹⁸ bytes (exactly).

1 exabyte = 1×10¹⁸ bytes

About the exabyte

Exa comes from the SI prefix for the sixth power of 1,000, which the metric system adopted in 1975, so one exabyte is the decimal quantity 10^18 bytes, or 1,000,000,000,000,000,000 bytes. That is 1,000 petabytes, and it equals 8 x 10^18 bits. The symbol is EB, and it should not be confused with the binary exbibyte.

The exbibyte (EiB) is 2^60 bytes, which is 1,152,921,504,606,846,976 bytes, about 15.3 percent more than an exabyte. Hard drive makers and networking use decimal definitions, so an exabyte is the usual unit for fleet-scale storage and traffic. Wikipedia illustrates the size as roughly global monthly internet traffic in 2004. By 2016 Cisco estimated global IP traffic at about 96 exabytes per month, roughly 1.2 zettabytes per year.

A 64-bit address space spans 2^64 bytes, which is 16 exbibytes, a binary quantity that is a different size from 16 exabytes.

Sources: Wikipedia: Byte; Wikipedia: Metric prefix; Wikipedia: Zettabyte Era

Exabyte conversion chart

1 exabyte expressed in every other digital storage unit:

Unit1 exabyte
Bytes1×10¹⁸
Kilobytes1×10¹⁵
Megabytes1,000,000,000,000
Gigabytes1,000,000,000
Terabytes1,000,000
Bits8×10¹⁸
Petabytes1,000
Kibibytes976,562,500,000,000
Mebibytes953,674,316,406
Gibibytes931,322,574.6
Tebibytes909,494.7018
Kilobits8×10¹⁵
Megabits8,000,000,000,000
Gigabits8,000,000,000
Zettabytes0.001
Yottabytes0.000001
Pebibytes888.1784197
Exbibytes0.867361738
Terabits8,000,000
Kibibits7.8125×10¹⁵
Mebibits7,629,394,531,250
Gibibits7,450,580,597
Nibbles2×10¹⁸

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