3X5 File - opening and understanding

Did your computer fail to open a 3X5 file? We explain what they are used for and recommend software that we know can open or otherwise handle your .3X5 files.

What is a 3X5 file?

A .3X5 file is a 3by5 source file. Through our analysis of 3X5 files, we know that one use of the format is 3by5 source. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.

How to open 3X5 files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension 3X5 for different purposes.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Suggest another file format using extension 3X5

While we know of one file format using the .3X5 file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .3X5 file.