
 
Orders of magnitude of data 
The exabit is a multiple of the unit bit for digital information or computer storage. The prefix exa (symbol E) is defined in the International System of Units (SI) as a multiplier of 10^{18} (1 quintillion, short scale),^{[1]} and therefore
The exabit has the unit symbol Ebit or Eb.
The exabit is closely related to the exbibit, a unit multiple derived from the binary prefix exbi of the same order of magnitude,^{[2]} which is equal to 2^{60}bits = 1152921504606846976bits, or approximately 15% larger than the exabit.