M4 File - opening and understanding

Did your computer fail to open a M4 file? We explain what they are used for and recommend software that we know can open or otherwise handle your .M4 files.

What is a M4 file?

A .M4 file is a m4 preprocessor / macro source file. Through our analysis of M4 files, we know that one use of the format is m4 preprocessor / macro 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 M4 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 M4 for different purposes.

While we have not verified the apps ourselves yet, our users have suggested 4 different M4 openers which you will find listed below.

Suggest another file format using extension M4

While we know of one file format using the .M4 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 .M4 file.

Various viewers for this file format

These apps are known to open certain types of M4 files. Remember, different programs may use M4 files for different purposes, so you may need to try out a few of them to be able to open your specific file.

EmbirdEmbirdUser submitted
General CPadGeneral CPadUser submitted
editNCeditNCUser submitted
Predator CNC EditorPredator CNC EditorUser submitted
We have not verified any software that we know for certain will work with M4-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 M4-files. If you know one, please use the 'Suggest a program' link below and tell us about it!