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Multiples of bits
Value Metric
1000 kbit kilobit
10002 Mbit megabit
10003 Gbit gigabit
10004 Tbit terabit
10005 Pbit petabit
10006 Ebit exabit
10007 Zbit zettabit
10008 Ybit yottabit
1024 Kibit kibibit Kbit kilobit
10242 Mibit mebibit Mbit megabit
10243 Gibit gibibit Gbit gigabit
10244 Tibit tebibit -
10245 Pibit pebibit -
10246 Eibit exbibit -
10247 Zibit zebibit -
10248 Yibit yobibit -

The petabit is a multiple of the unit bit for digital information or computer storage. The prefix peta (symbol P) is defined in the International System of Units (SI) as a multiplier of 1015 (1 quadrillion, short scale),[1] and therefore

1 petabit = 1015bits = 1000000000000000bits = 1000 terabits.

The petabit has the unit symbol Pbit or Pb.

The petabit is closely related to the pebibit, a unit multiple derived from the binary prefix pebi of the same order of magnitude,[2] which is equal to 250bits = 1125899906842624bits, or approximately 13% larger than the petabit.

See also[edit]