Prefixes for bit and byte
Decimal Value SI 10001 k kilo- 10002 M mega- 10003 G giga- 10004 T tera- 10005 P peta- 10006 E exa- 10007 Z zetta- 10008 Y yotta-	Binary Value FOLDOC IEC 10241 K kilo- Ki kibi- 10242 M mega- Mi mebi- 10243 G giga- Gi gibi- 10244 T tera- Ti tebi- 10245 P peta- Pi pebi- 10246 E exa- Ei exbi- 10247 Z zetta- Zi zebi- 10248 Y yotta- Yi yobi-

A yobibyte (a contraction of yotta binary byte) is a unit of information or computer storage, commonly abbreviated YiB.

1 yobibyte = 2⁸⁰ bytes = 1,208,925,819,614,629,174,706,176 bytes = 1,024 zebibytes

The yobibyte is closely related to the yottabyte, which can either be a synonym for yobibyte, or refer to 10²⁴ bytes = 1,000,000,000,000,000,000,000,000 bytes, depending on context (see binary prefix).

The zebi and yobi prefixes were originally not part of the system of binary prefixes, but were added by the International Electrotechnical Commission in August 2005.^[1]

See also

• Yobibit
• yottabyte
• zebibyte
• Binary prefix
• SI prefix
• IEEE 1541
• Orders of magnitude (data)

References