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DGN file extension

The table below provides useful information about the .dgn file extension. It answers questions such as:

  • What is the .dgn file?
  • What program do I need to open a .dgn file?
  • How can the .dgn file be opened, edited or printed?
  • How can I convert .dgn files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Bentley MicroStation Drawing

DGN file is a Bentley MicroStation Drawing. Bentley System Microstation is a 3D CAD software for drawing and construction.
DGN format description not yet available
Category: Document files
Application: Bentley MicroStation
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
DGN aliases:
DGN related links:
DGN related extensions:
Autodesk AutoCAD Plot Drawing

Autodesk AutoCAD Slide Library

Autodesk AutoCAD Slide Library

Bentley MicroStation Design Library

Bentley MicroStation User Preference File

Bentley MicroStation VBA Project

Bentley MicroStation Design

Bentley MicroStation Printer Driver Configuration

Bentley MicroStation Hidden Line Data

Bentley MicroStation Cell Library

Other types of files may also use the .dgn file extension.

🚫 The .dgn file extension is often given incorrectly!

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

cgn, dbn, dfn, dg, dgb, dgm, dn, dng, dnn, drn, dtn, dvn, dyn, egn, gdn

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Digital Negative Image
Apollo HDRU Image
PoldatDB Data
Garmin Region File
TunnelCAD Input/Output File
Lotus Freelance Graphics Diagram
Racelogic PerformanceBox Binary Data
Slax Livecd Signature File
Kissock EModel Data Variables
Adobe Dimension Model Data

🔴 Can't open a .dgn 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 cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .dgn file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .dgn file extension, write to us!

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