A petabit is a unit of information or computer storage, commonly abbreviated "Pb".

1 petabit = 10¹⁵ bits = 1 000 000 000 000 000 bits (one quadrillion, long scale: one billiard)

terabit << petabit << exabit

The petabit is closely related to the pebibit, which is equal to 2⁵⁰ bits.

See also

• Binary prefix