The kilobyte (KB) equals 1,024 bytes in binary computing terms and is used to measure small files like text documents, email messages, and thumbnail images. While the term sometimes refers to 1,000 bytes in networking contexts, operating systems consistently use the binary definition. One kilobyte can store roughly half a page of plain text.

The terabyte (TB) equals 1,024 gigabytes or approximately 1.1 trillion bytes, used for large-scale storage like hard drives, cloud backups, and enterprise databases. Modern external hard drives commonly offer 1 to 8 TB of capacity, enough to hold hundreds of thousands of photos or thousands of hours of video. One terabyte represents a massive amount of data by everyday consumer standards.