STP → DGN · Windows

Convert STP to DGN

Batch convert STP to DGN for easy sharing. reaConverter exports 3D models offline with control over output settings.

Online converters too slow for your STP files? reaConverter works locally and handles unlimited batches. All processing runs locally on your PC, so your files stay private and secure. 3D artists rely on it when clients need different file formats.

DownloadSTP to DGN ConverterConvert
STP to DGN
Online
.stp.DGN
4.8

Converting files since 2001

Runs offline — nothing uploaded

Read what our users say →

How to Convert Multiple .stp Models to .dgn?

1. Download and Install reaConverter

First, grab reaConverter from the download button below. Installation is fast, and the software runs offline — no account or signup needed.

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Install reaConverter

2. Load your STP files

Open reaConverter and add your STP files. You can load individual files, entire folders, or even nested subfolders.

Drop your STP files into the window or use File menu to browse and select folders.

Load your STP files into reaConverter

3. Select DGN as output format

Choose DGN as the target format. Pick a destination folder or let reaConverter save files alongside the originals.

Select DGN as output format

4. Start STP to DGN conversion

Hit Convert and let reaConverter do the work. The progress window shows status for each file in real time.

Start Conversion

After conversion, find your DGN files in the output folder. Click 'Show converted files' to open it directly.

Step by step

How It Works

reaConverter offers the fastest, simplest solution for converting your STP files into DGN without 3D or CAD software - all models processed on your PC for maximum privacy and speed.

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3D Workflow

Convert 3D models in batch

Need STP models as DGN? reaConverter handles a whole folder in one run, on your own PC.

  • Convert a whole folder of models to DGN in one run
  • Set the camera angle on X, Y and Z, or start from the isometric preset
  • Pick up new models automatically with Watch Folders
  • Draw isometric, top, front or side views as line drawings with 2D projection
Supported 3D formats
3D model conversion

User reviews

What people say after the first batch

Average User Rating:4.8
Last updated on September 28, 2026
reaConverter handles STP file conversion excellently. The batch processing feature is perfect for converting multiple CAD files at once, and the drag-and-drop interface makes it super easy to use. Quality is preserved well during conversion, and it supports plenty of output formats. Recommended for engineers and designers.
Michael Rodriguez
Michael Rodriguez
Mechanical Engineer
An excellent program! I use it regularly in my work - it supports nearly every file format imaginable. The interface is intuitive and runs flawlessly every time.
Roger Cook
Roger Cook
Happy User
For agencies handling confidential data, reaConverter eliminates cloud-upload risks while delivering unmatched conversion reliability. Our team uses it both in-office and remotely with identical results.
Jamal Bailey
Jamal Bailey
Satisfied Customer
Our volunteer team uses reaConverter to prepare images for fundraising campaigns. The learning curve was minimal, and the results are professional-grade. The customer support team even helped us customize a workflow — fantastic service!
Jason P. Bailey
Jason P. Bailey
Non-Profit Coordinator
We deployed reaConverter across our department to standardize file formats for our archives. The command-line support and automation features integrated perfectly into our systems. Stellar performance and zero crashes—it just works.
David R.
David R.
IT Solutions Architect
So simple! I just needed to convert a couple of files to another format, and for such a straightforward task, the online converter worked perfectly — delivering the files I needed in no time. Excellent service!
Kenneth D. Carter
Kenneth D. Carter
Satisfied Customer

FAQ

STP to DGN Conversion

What are STP files?

STP is a file format used by popular CAD software. STP contains 3-dimensional data saved in the Standard for the Exchange of Product Data (STEP, ISO 10303) file format.

What are DGN files?

DGN stands for "design" and represents an extension typically used for CAD (Computer Aided Design) files created with Bentley Systems' MicroStation or with IGDS (Intergraph's Interactive Graphics Design System) — two popular programs used by architects, engineers, constructors and designers. DGN files can include sizeable building projects with a rich amount of details, usually have a very large size and can be viewed with a limited number of CAD programs.

Can reaConverter convert STP to DGN?

Yes! reaConverter instantly converts .stp to .dgn with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert STP models directly from Windows Explorer using the right-click menu — fast and convenient.

What is reaConverter used for?

reaConverter is a Windows converter for 800+ formats, 3D models among them. For STP to DGN it replaces the round trip through Blender, a CAD program or an upload form: add the files, pick the output format, and the whole batch converts offline. Engineers, 3D printing shops and product teams use it to move models between CAD, printing, web and documentation formats.

Why choose offline conversion with reaConverter?

reaConverter is a software program that is used for offline files conversion. Your proprietary documents never leave your computer – essential for architects, engineers, healthcare and government contractors handling classified projects. Meets GDPR, HIPAA, CCPA, and corporate security policies by ensuring files never cross borders or third-party systems.

Can I convert STP to DGN online?

If you only need to convert a few STP files to DGN format, feel free to try our free online free online STP to DGN converter — perfect for small batches with no installation needed!

How can I turn STP files into DGN on my computer?

The best way to change STPs to DGNs on your PC is to install a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from STP to DGN.

How can I automate STP to DGN files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert STP files to DGN using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line stp to dgn converter for batch processing.

What else can I do with reaConverter?

Separate STEP PartsConvert RAW formatsConvert PDFAdd text on picturesConvert CAD formatsSet file date

Related conversions

Other ways to convert STP files, and other sources that convert to DGN.

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Batch conversion, editing, and processing across 800+ formats, from RAW and HEIC to DICOM, DWG, and PDF. Everything runs locally, with no cloud and no upload limits.

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