A yottabyte is the largest unit of measurement for computer data. It consists of 1,208,925,819,614,629,174,706,176 bytes (or 2 to the 80th power). It may also be estimated as 1,000,000,000,000,000,000,000,000 bytes (which is 10 to the 24th power).

For a list of all units of measurement used for computer data, view this Help Center article.

Updated: June 23, 2009