CML file extension
The table below provides useful information about the .cml file extension. It answers questions such as:
- What is the .cml file?
- What program do I need to open a .cml file?
- How can the .cml file be opened, edited or printed?
- How can I convert .cml files to another format?
Table of Contents
We hope you find this page helpful and a valuable resource!
3 extension(s) and 0 alias(es) found in database
✅ ProWorx NXT Comment Data

CML file is a ProWorx NXT Comment Data. ProWORX NXT is produced by Schneider Electric, The simple cross platform programming solution for Modicon PLCs.
✅ CryptoMailer Encrypted File

CML file is a CryptoMailer Encrypted File. CryptoMailer is a file and e-mail encryption utility, featuring AES and 3-DES.
✅ Chemical Markup Language File

CML file is a Chemical Markup Language File. The Chemical Markup Language (CML or ChemML) is a defined set of XML tags for chemists to communicate the structure of complex molecules.
Other types of files may also use the .cml file extension.
🚫 The .cml file extension is often given incorrectly!
According to the searches on our site, these misspellings were the most common in the past year:
Is it possible that the filename extension is misspelled?
We found the following similar file extensions in our database:
🔴 Can't open a .cml file?
When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:
Windows cannot open this file:
example.cml
To open this file, Windows needs to know what program you want to use to open it...
If you don't know how to set the .cml file association, check the FAQ.
🔴 Can I change the extension of files?
Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.
If you have helpful information about the .cml file extension, write to us!