What is the approximate size of a kilobyte (KB) in bytes?

A kilobyte (KB) is typically understood to mean approximately 1,000 bytes in the context of computing and data storage. This estimation is based on the decimal system where 1 kilobyte is defined as 1,000 bytes. In some contexts, particularly in computing and programming, it can also refer to 1,024 bytes, which is derived from the binary system (2^10). However, for most practical purposes, especially in terms of storage devices and data transfer, it is commonly approximated as 1,000 bytes.

Choosing the option of approximately 1,000 bytes accurately reflects the most widely used understanding of the term kilobyte in a contemporary setting, particularly in general discussions about digital information.