What is the recommended unit symbol for a kilobyte?

The recommended unit symbol for a kilobyte is "KB." This abbreviation uses uppercase letters to denote the unit of measurement for digital information. Specifically, "K" stands for kilo, which represents a factor of 1,024 in binary systems commonly used in computing. The uppercase "B" signifies that the measurement refers to bytes, which are the fundamental units of digital data storage.

In contexts where distinctions are important, "KB" helps to avoid confusion with other units such as "Kb," which could imply kilobits, a different measure where 1 kilobit equals 1,000 bits rather than 1,024 bytes. Therefore, using "KB" clearly communicates the intended measurement of kilobytes, adhering to established conventions in computing and data assessment.