Floppy Disk (3.5", DD) to Floppy Disk (5.25", HD) Conversion
Convert between Floppy Disk (3.5", DD) and Floppy Disk (5.25", HD) quickly and accurately.
How to Convert Floppy Disk (3.5", DD) to Floppy Disk (5.25", HD)
Conversion Formula
Example
Convert 15 DD to HD:
Unit Information
Learn about the data storage units you're converting between
Floppy Disk (3.5", DD)
DD
Definition
A 3.5-inch double-density floppy disk holds approximately 720 KB of data. These were the standard removable storage media in the 1980s and early 1990s, widely used for software distribution and data backup.
History/Origin
Introduced in 1982, 3.5-inch DD floppies became the standard removable storage medium, replacing 5.25-inch disks.
Current Use
Historical reference for data storage capacity, occasionally used in legacy systems and educational contexts.
Multiplier
5830656
Offset
0
Floppy Disk (5.25", HD)
HD
Definition
A 5.25-inch high-density floppy disk holds approximately 1.2 MB of data. These were introduced as higher-capacity alternatives to DD floppies and were used in some computer systems in the late 1980s.
History/Origin
Introduced in 1984, 5.25-inch HD floppies offered higher capacity but were eventually superseded by 3.5-inch disks.
Current Use
Historical reference for data storage capacity, occasionally used in vintage computer systems.
Multiplier
9711616
Offset
0
Floppy Disk (3.5", DD) to Floppy Disk (5.25", HD) Conversion Table
| Floppy Disk (3.5", DD) [DD] | Floppy Disk (5.25", HD) [HD] |
|---|---|
| 1 DD | 0.60038 HD |
| 10 DD | 6.003796 HD |
| 25 DD | 15.00949 HD |
| 50 DD | 30.018979 HD |
| 100 DD | 60.037959 HD |
| 0 DD | 0E+0 HD |
| -10 DD | -6.003796 HD |
| -40 DD | -24.015183 HD |
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