Decimal
1000 kbit kilobit
10002 Mbit megabit
10003 Gbit gigabit
10004 Tbit terabit
10005 Pbit petabit
10006 Ebit exabit
10007 Zbit zettabit
10008 Ybit yottabit
Binary
1024 Kibit kibibit Kbit Kb kilobit
10242 Mibit mebibit Mbit Mb megabit
10243 Gibit gibibit Gbit Gb gigabit
10244 Tibit tebibit
10245 Pibit pebibit
10246 Eibit exbibit
10247 Zibit zebibit
10248 Yibit yobibit
Orders of magnitude of data

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.

## Research

In October 2022, scientists from Denmark and Sweden reported the first data transmission to exceed 1 Pbit/s using only a single laser and a single optical chip.[3][4]