List of floppy disk formats Physical composition Floppy disk physical characteristics (capacity and tracks are nominal, per side)

| Size_ | Density | Tracks | Coercivity | Unformatted_capacity_per_side |
|---|---|---|---|---|
| 3½in | single | 40 | 600Oe | 250KB |
| 3½in | double | 80 | 600Oe (300Oe) | 500KB |
| 3½in | high | 80 | 750Oe (600Oe) | 1000KB |
| 3½in | extended | 80 | 900Oe | 2000KB |
| 5¼in | single/double | 40 | 300Oe | 250KB |
| 5¼in | quad | 80 | 300Oe | 500KB |
| 5¼in | high | 80 | 600Oe | 750KB |
| 8in | single/double | 77 | 300Oe | 1000 KB |