FM3 File - opening and understanding

Did your computer fail to open a FM3 file? We explain what they are used for and recommend software that we know can open or otherwise handle your .FM3 files.

What is a FM3 file?

A .FM3 file is a Formatting Data for Lotus 1-2-3 worksheet file. Through our analysis of FM3 files, we know that one use of the format is Formatting Data for Lotus 1-2-3 worksheet . 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 FM3 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 FM3 for different purposes.

While we have not verified the apps ourselves yet, our users have suggested 1 different FM3 openers which you will find listed below.

Suggest another file format using extension FM3

While we know of one file format using the .FM3 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 .FM3 file.

Various viewers for this file format

These apps are known to open certain types of FM3 files. Remember, different programs may use FM3 files for different purposes, so you may need to try out a few of them to be able to open your specific file.

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We have not verified any software that we know for certain will work with FM3-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with FM3-files. If you know one, please use the 'Suggest a program' link below and tell us about it!