DEX File - opening and understanding

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

What is a DEX file?

A .DEX file is a Microsoft Excel Spreadsheet file. The .dex file extension is used for a workbook or spreadsheet file format that Microsoft developed. These DEX files are normally found in Windows PCs where older versions of Microsoft Excel is installed. A .dex file can be created using these outdated Microsoft Excel versions.

A DEX file may contain formulas, equations, calculations, text, numbers, and formatting attributes usually found in other spreadsheet documents created using Microsoft Excel. This software is a popular spreadsheet application. Its more recent versions use the XLS file format for its default spreadsheet output files, while the newest Microsoft Excel versions, starting with MS Excel 2007, use the XLSX file format for its default spreadsheet output files. These .dex files can be opened and viewed using both old and new versions of Microsoft Excel. This software can also be used to edit a DEX file's content and export it to a more recent file format like XLS or XLSX.

How to open DEX 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 DEX for different purposes. We have identified 2 DEX openers for Windows that is compatible with this specific type of DEX file.

Programs that open these files

We have not yet verified any programs for Mac that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!
We have not yet verified any web services that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Other file formats using extension .DEX

While Microsoft Excel Spreadsheet is a popular type of DEX-file, we know of 2 different uses of the .DEX extension.

The DEX file extension indicates to your device which app can open the file. However, different apps may use the same file extension for different types of data. So a DEX opener may not be able to open all kinds of DEX files. In this case, look through both formats to make sure you find the best suited DEX viewer.

Dalvik Dex class

Through our analysis of DEX files, we know that one use of the format is Dalvik Dex class. 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.

While we have not verified the apps ourselves yet, our users have suggested 8 different DEX openers which you will find listed below.

Various viewers for this file format

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

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