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), and therefore 1 petabit = 10¹⁵ bits = 1 000 000 000 000 000 bits = 1000 terabits. The petabit has the unit symbol Pbit or Pb.

conversion table

The megabit is a multiple of the unit bit for digital information. The prefix mega (symbol M) is defined in the International System of Units (SI) as a multiplier of 10⁶ (1 million), and therefore 1 megabit = 10⁶bits = 1 000 000 bits = 1000 kilobits.

The megabit has the unit symbol Mb or Mbit.

conversion table