Meaning – The term octet, refers to a unit of digital information in computing and telecommunications that consists of eight bits. The term is often used when the term byte might be ambiguous, as the byte has historically been used for storage units of a variety of sizes.

Octets can be represented using number systems of varying bases such as the hexadecimal, decimal, or octal number systems. The binary value of all eight bits set (or activated) is 11111111, equal to the hexadecimal value FF, the decimal value 255, and the octal value 377. One octet can be used to represent decimal values ranging from 0 to 255.

Example of usage“The term octet is often used when the use of byte might be ambiguous. It is frequently used in the Request for Comments (RFC) publications of the Internet Engineering Task Force to describe storage sizes of network protocol parameters.”