What Is a CMBL File?

This article explains what a CMBL file is and how to open one on your computer or mobile device.

What Is a CMBL File?

A file with the CMBL file extension is a Logger Pro Data file that may contain videos, spreadsheets, and other analytical information. They are generally used by students to store data collected by science and math experiments.

How to Open a CMBL File

CMBL files are XML based, which means any free text editor can be used to view them, like Windows Notepad or a program from our Best Free Text Editors list.

Some web browsers might try to open it as a text file and display it in the browser. If a text editor or web browser displays the file in a strange or unreadable format, Logger Pro can be used instead (a free demo is available).

The free Vernier Graphical Analysis app for iOS, Android, Windows, macOS, and Chromebook can open one, too, but it might not be able to read all the information contained in the file.

How to Convert a CMBL File

If the file is readable outside of Logger Pro, you can open it in a text editor or maybe even Microsoft Excel, and then save it to a new format.

Otherwise, we recommend installing the trial version of Logger Pro so you can open the file there to save/export it to a different file type, possibly even to a Logger Lite Document file (.GMBL).

If Logger Pro doesn't let you export CMBL to GMBL, you might be able to import the file into the free Logger Lite program to do the conversion there.

With the Logger Pro trial, you can most likely also "print" the CMBL file to a PDF file if you have a PDF printer installed.

Use the online cmbl2csv converter tool if you want to convert CMBL to CSV.

Still Can't Open It?

If your file doesn't open even after trying the suggestions above, double-check the file extension. You want to make sure your file actually does end with the .CMBL file extension because some files use a similar extension even though they're in a totally different format.

For example, a CML file might look like a CMBL file, but it's actually a Chemical Markup Language, CrytoMailer Encrypted, or Crazy Machine Lab file. None of those formats are the same as Logger Pro data files, which means they can't be opened in the same way as CMBL files.

CBL is another example where the file extension is used for COBOL Source Code files. They're unrelated to the format described on this page and therefore are opened with a different program.