The pebibyte is a multiple of the unit byte for digital information. It is a member of the set of units with binary prefixes defined by the International Electrotechnical Commission (IEC).[1] Its unit symbol is PiB.

Multiples of bytes
Value Metric
1000 kBkilobyte
10002 MBmegabyte
10003 GBgigabyte
10004 TBterabyte
10005 PBpetabyte
10006 EBexabyte
10007 ZBzettabyte
10008 YByottabyte
1024 KiBkibibyte KBkilobyte
10242 MiBmebibyte MBmegabyte
10243 GiBgibibyte GBgigabyte
10244 TiBtebibyte
10245 PiBpebibyte
10246 EiBexbibyte
10247 ZiBzebibyte
10248 YiByobibyte

The prefix pebi (symbol Pi) represents multiplication by 10245, therefore:

1 pebibyte = 250 bytes = 1125899906842624bytes = 1024 tebibytes

The pebibyte is closely related to the petabyte (PB), its corresponding unit in the decimal set of multiples defined in the International System of Units (SI), and which represents 1015 bytes = 1000000000000000bytes. It follows that one pebibyte (1 PiB) is approximately equal to 1.13 PB.

One pebibyte (1 PiB) is equal to eight pebibits (8 Pibit).

One thousand twenty-four pebibytes (1024 PiB) is equal to one exbibyte (1 EiB).

See also


  1. "Prefixes for binary multiples". NIST. 2007. Retrieved 10 August 2007.
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