PARAM File Type

- The quick facts

What are PARAM files and how to open them

Are you having problems opening a PARAM file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a PARAM file?

A .PARAM file is a CASTEP Parameters file.

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open PARAM files

Important: Different programs may use files with the PARAM file extension for different purposes, so unless you are sure which format your PARAM file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 3 different PARAM openers which you will find listed below.

Last updated: December 25, 2019

Various apps that use files with this extension

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

Notepad++Notepad++User submitted
AkelPadAkelPadUser submitted
Materials StudioMaterials StudioUser submitted

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about PARAM file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.