>> DR4 file

DR4 file format description

Many people share .dr4 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .dr4 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .dr4 files.

2 filename extension(s) found in our database.

.dr4 - AllyCAD Drawing Document

The DR4 document files are related to AllyCAD. DR4 file is an AllyCAD Drawing Document. AllyCAD is a CAD software application for 2D and 3D design and drafting, developed and sold by Knowledge Base.

Document files
- / -
AllyCAD Drawing Document related extensions:
GeForms Form Document
Resume Builder 4 Document
Microsoft Belief Network Document
CADAM Drawing Document
CADAM Overlay Data
3D Home Architect Plan

.dr1 - Nicolet 5DX Data

The DR1 data files are related to Spectragryph. DR1 file is a Nicolet 5DX FTIR Spectrometer Data. Nicolet 5DX is an FTIR spectrometer.

Data files
- / -
dr2, dr3, dr4, dr5
Nicolet 5DX Data related extensions:
Nicolet 5DX Data
SpectraGryph Data
Andor SIF Data

Naturally, other applications may also use the .dr4 file extension. Even harmful programs can create .dr4 files. Be especially cautious with .dr4 files coming from an unknown source!

Can't open a .dr4 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 .dr4 file extension is often given incorrectly!

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

cr4, d4, df4, dr, dre, drr, drt, dt4, fr4, sr4

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

CRBasic Source
PSpice Custom Derating
Titan Showfile
STABCAL Calculation Data
EGSEING Direct Mode Data
Omnis Studio Database File

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, 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 .dr4 file format, then write to us!