Encyclopedia > Yottabyte

  Article Content


A yottabyte is a unit of measurement in computers of approximately one million million million million (American septillion) bytes.

Because of irregularities in definition and usage of the kilobyte, the exact number could be any one of the following:

  1. 1,208,925,819,614,629,174,706,176 bytes - 1024 times 1024 times 1024 times 1024 times 1024 times 1024 times 1024 times 1024, or 280. This is 1024 times a zettabyte. This is the definition used in computer science and computer programming
  2. 1,000,000,000,000,000,000,000,000 bytes - or 10 24.
See integral data type.

A yottabyte (280 bytes) is about 2.01 moles of bytes.

There isn't (yet) a common name for 1024 times a yottabyte.

To clarify the meaning(1) above, the International Electrotechnical Commission (IEC), a standards body, in 1997 proposed short unions of the International System of Units (SI) prefixes with the word "binary." They did not provide a name for this number, although, it would probably be yobibyte. This naming convention has not been widely accepted.

External Links



All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article
Anna Karenina

... respectively. This is the occasion the first meeting of Anna and Vronsky. As they, Anna and Countess Vronsky are leaving the station there is a railway suicide of ...

This page was created in 37.5 ms