Yobibyte（Yotta binary byte的缩写），简称YiB，是一个电脑容量单位，即1,208,925,819,614,629,174,706,176字节，是1ZiB的1024倍。

YiB与 Yottabyte(YB) 有很密切的关系，根据上下文，YiB既可以是YB的同义词，也可以是指 10字节，即1,000,000,000,000,000,000,000,000 字节（参见 二进制前缀）。

The yobibyte is a multiple of the unit byte for digital information. It is a member of the set of units with binary prefixes defined by the International Electrotechnical Commission (IEC). Its unit symbol is YiB

The prefix yobi (symbol Yi) represents multiplication by 1024, therefore: