A kilobyte (1 KB) is a unit of digital information storage that equals 1,024 bytes. It is commonly used to measure the size of small files, such as text documents or images. In computing, a byte typically represents a single character, like a letter or number, making 1 KB sufficient for a short paragraph of text. In the context of data storage, hard drives and flash drives often use kilobytes as a basic measurement unit. Larger files, such as videos or high-resolution images, are usually measured in megabytes (MB) or gigabytes (GB), which are multiples of kilobytes.