What is the maximum number of files I can place into one sub-folder in FAT32

FAT32 maximum number of files in a folder

Question Info

Last updated April 22, 2020 Views 2,388 Applies to:

The maximum size for a FAT32 directory is 65536 32bit entries. A file will require at least 2 entries depending on the length of the filename. Long filenames are stored in 16bit UNICODE characters and only thirteen characters are stored per directory entry.


Large directories should be avoided for performance reasons. For example, adding a file requires all existing entries to be scanned to avoid duplicates.


The FAT32 specification can be downloaded here:


This answer is provided “as-is.” You bear the risk of using it.

5 people were helped by this reply


Did this solve your problem?

Sorry this didn't help.

Great! Thanks for marking this as the answer.

How satisfied are you with this reply?

Thanks for your feedback, it helps us improve the site.

How satisfied are you with this response?

Thanks for your feedback.