The pebibit is a multiple of the bit

Bit

A bit is the basic unit of information in computing and telecommunications; it is the amount of information stored by a digital device or other physical system that exists in one of two possible distinct states...

, a unit of digital information storage, prefixed by the standards-based multiplier pebi (symbol Pi), a binary prefix

Binary prefix

In computing, a binary prefix is a specifier or mnemonic that is prepended to the units of digital information, the bit and the byte, to indicate multiplication by a power of 2...

 meaning 2⁵⁰. The unit symbol of the pebibit is Pibit or Pib.

1 pebibit = 2⁵⁰ bit

Bit

A bit is the basic unit of information in computing and telecommunications; it is the amount of information stored by a digital device or other physical system that exists in one of two possible distinct states...

s = = 1024 tebibit

Tebibit

The tebibit is a multiple of the bit, a unit of digital information storage, prefixed by the standards-based multiplier tebi , a binary prefix meaning 240...

s

The pebibit is closely related to the petabit

Petabit

The petabit is a multiple of the unit bit for digital information or computer storage. The prefix peta is defined in the International System of Units as a multiplier of 1015 , and therefore...

, the corresponding unit using the metric prefix peta, which is 10¹⁵ bits.

The binary prefixes are not part of the International System of Units

International System of Units

The International System of Units is the modern form of the metric system and is generally a system of units of measurement devised around seven base units and the convenience of the number ten. The older metric system included several groups of units...

(SI).