A gigabyte (GB) is a unit of digital information storage that equals about one billion bytes. To put it in perspective, a single byte can hold one character, like a letter or number. Therefore, a gigabyte can store a large amount of data, such as hundreds of photos, thousands of songs, or even a few hours of video. In everyday life, you might encounter gigabytes when using devices like smartphones, tablets, or computers. For example, a smartphone with 64 GB of storage can hold a significant number of apps, games, and media files, making it essential for managing your digital life.