The Complete DGN to Revit Conversion Guide

This guide is part of the RapidPipeline 3D Formats Knowledge Database. It shows how to convert DGN to Revit, if you'd like to know more about the formats, please check out the following links:

• Learn more about the DGN format
• Learn more about the Revit format

RapidPipeline can import DGN files, but currently doesn't support exporting to Revit format yet.

If you specifically need Revit export functionality for your workflow, please feel free to get in touch with us - we'd be happy to discuss your requirements and potential timeline for adding this export capability.

If you need, you can import Revit files and convert them to any of these 8 formats: FBX, glTF, OBJ, PLY, STL, USD, USDZ, and VRM.

In the meantime, you can explore other options on the 3D Formats Knowledge Database, which might serve as suitable alternatives for your workflow depending on your target applications and use cases.

The DGN file is a format mostly used for CAD and infrastructure design data.
The Revit file is a format mostly used for Building Information Modeling (BIM) software for architectural design, engineering, and construction documentation.

The following limitations should be taken into account when converting DGN files to Revit format:

DGN Feature (not supported by Revit)	Limitation Details
Free-Form Surfaces	Free-Form Surfaces Support: DGN: Full support | Revit: Partial support Revit Notes: Limited NURBS support, primarily focused on building-specific forms and conceptual massing rather than complex organic surfaces. Impact: Free-form surfaces allow a CAD user to design surfaces with advanced controls over curvature and continuitiy. While these surfaces are common for CAD models (in the form of so-called boundary representations or "B-reps"), they need to be converted to polygonal triangle or quad data to work with most 3D rendering engines - a process called tessellation. In this example, a surface patch is used to describe a part of a curved surface of a product. Without support for this feature, the free-form surface has to be tessellated into quads or triangles.
Vertex Colors	Vertex Colors Support: DGN: Full support | Revit: No support Impact: Vertex colors allow the attachment of colors to each vertex of a 3D model. This can be useful in scenarios such as scientific visualization, or when converting/meshing data from a colored 3D point cloud, for example. On the polygonal surface connecting the vertices, the respective vertex colors are usually smoothly interpolated. In this example, different colors are attached to the different corners of a cube. Without support for this feature, the cube won't have any colors.
Animations	Animations Support: DGN: Partial support | Revit: No support DGN Notes: Simple animation support for design sequences Impact: Animations are an important part of many interactive 3D assets, for example in real-time rendering (including games, XR training, assembly instructions, product demos, and other use cases). There are various kinds of animations that can be used on 3D models. In this example model, a rigid animation is used to make the gears spin. Without support for this feature, in this example, the gears won't move.
Rigid Animations	Rigid Animations Support: DGN: Partial support | Revit: No support DGN Notes: Basic animation for construction sequencing Impact: Rigid Animations are typically used to animate mechanical parts. In this example, the door of this 3D model of a microwave can be interactively opened or closed, using a rigid animation that gradually changes the 3D transformation of the door. Without support for this feature, in this example, the door will just stay in place and won't move.

Doing 3D conversion right, especially at scale, can be tricky, as 3D data is in general a rather complex (yet very powerful!) medium. This also applies to DGN and Revit files - the conversion guide above provides a rough first idea about that. Once you know what you would like to do, tools like RapidPipeline can help you perform the necessary steps, and to even automate the process for thousands or even millions of files.

Especially when introducing pipelines and workflows at scale in an enterprise context, it is usually good to rely on dedicated tools and expertise, making sure you do not introduce any steps into your 3D workflow that are detrimental to the final output's quality, or that take your team too much time (and money).

If you're interested to hire dedicated expertise from the best in the field to help your company reach your goals fast and reliably, please do not hestitate to contact DGG. Being the creators of RapidPipeline, and ambassadors for open 3D standards for more than a decade, we have been building some of the world's most advanced 3D pipelines, having processed many millions of 3D assets.

Therefore, our expertise will help you to reach your goals faster, at scale, and with the least possible friction, since we are focused on maximum interoperability.

To get started with 3D data conversion and optimization today, sign up for a free account!

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