DEN file format description

Many people share .den files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .den file can be edited, converted or printed with. On this page, we try to provide assistance for handling .den files.

1 filename extension(s) found in our database.

.den - XMVB Density Data

The DEN data files are related to XMVB. The DEN file is a XMVB Density Data. Xiamen Valence Bond (XMVB) is a quantum chemistry program for performing electronic structure calculations based on the non-orthogonal Valence Bond methods.

Data files
- / -
XMVB Density Data related extensions:
XMVB Orbital Guess Data
XMVB Optimized VB Orbitals
XMVB Data File
XMVB Input File
XMVB Output File

Naturally, other applications may also use the .den file extension. Even harmful programs can create .den files. Be especially cautious with .den files coming from an unknown source!

Can't open a .den 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 can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .den file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

cen, de, deb, dem, dfn, dn, dne, drn, dsn, dwn, edn, en, fen, ren, sen

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Delphi Edit Mask
Cadence OrCAD Design
DRAKON Editor diagram
Xenus Link Sleuth Saved Results Data
USGS DEM Geospatial File Format Data
Forsyth-Edwards Notation Data

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .den file format, then write to us! >> DEN file