The storage capacity of a floppy disk is

A floppy disc, often known as a floppy or diskette, is a type of disc storage that consists of a thin and flexible magnetic storage media enclosed in a square or nearly square plastic shell coated with a fabric that keeps dust particles out of the spinning disc. When a floppy disc is inserted into a floppy disc drive (FDD) connected to or within a computer or other device, it stores digital data that may be read and written.

IBM created and manufactured the first floppy discs, which had an 8-inch disc diameter (203.2 mm). In the early years of the twenty-first century, the 514-inch and then the 312-inch became a common type of data storage and transfer. Floppy discs with a diameter of 312 inches can still be used with an external USB floppy disc drive. USB drives for 514-inch, 8-inch, and other-size floppy discs are difficult to come by.

Over time, floppy disc technology evolved. The first 8-inch floppy disc had an 80-kilobyte storage capacity. IBM released a 3-1/2 inch floppy disc with 1.44 MB of storage space in 1986. This may seem insignificant now, but at the time, it seemed difficult to envision needing more space.