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DGN (Bentley MicroStation DGN)

  • DGN (Design): The DGN format is not as prevalent as the AutoCAD formats but remains a critical format for large engineering projects that use CAD data, is the name used for CAD file formats compatible with Bentley Systems MicroStation.

Table of contents

Quick overview

  • Purpose: Unknown
  • Data type: vector
  • Type of format: CAD
  • Multi-file format: Yes
  • File type: binary
  • File extension(s): .dgn
  • Originally developed by: MicroStation (2003?)
  • Technical description/Specification/Schema: n.a.
  • License: Unknown
  • Regulated by: Unknown
  • Status: proprietary
  • Sample file(s): DGN sample files
  • Consumable by:


DGN (design) is the name used for CAD file formats supported by Bentley Systems, MicroStation and Intergraph's Interactive Graphics Design System (IGDS) CAD programs.[1] The DGN format is used in construction projects, including buildings, highways, bridges, process plants, shipbuilding. DGN is a competing format to Autodesk's DWG.

Additional resources

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