Having problems opening a DEC file?

We have programs that can open or convert your DEC files.

Opening DEC files

Did your computer fail to open a DEC file? We explain what DEC files are and recommend software that we know can open or convert your DEC files.

What is a DEC file?

Files with the .dec extension are most commonly associated with declaration files. The DEC files are text-based declaration files that are used by a variety of Application Development Language programs. They contain the constants and variables that are referenced by other files within the associated programming project.

The .dec file extension is also used for DEC DX WPS Plus document files, decoded files, Dolphin EasyConverter project files and Magic: The Gathering deck of cards files.

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

About File Extension DEC

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the DEC file format or software that uses files with the DEC suffix, please do get in touch - we would love hearing from you.