Convert 3MF to STP

3MF to STP with consistent quality. reaConverter handles 3D files in batch — perfect for collaboration across different software.

reaConverter transforms 3MF files to STP quickly and reliably. Drag in folders, set your options, click Convert, done. No cloud accounts, no file uploads, no complicated setup. Just install and start converting. 3D artists rely on it when clients need different file formats.

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting 3MF files in under two minutes.

Install reaConverter

2. Load your 3MF files

Add your 3MF files to reaConverter. Whether it's a handful or an entire archive, the batch engine processes them efficiently.

Browse for files, drag them in, or add entire folders at once. reaConverter queues everything automatically.

3. Select STP as output format

Pick STP as the output format. Set the destination folder and optionally configure resolution, quality, or file naming.

4. Start 3MF to STP conversion

Start the conversion with one click. reaConverter handles everything and notifies you when it's done.

When the batch finishes, your STP files are ready in the destination folder you chose earlier.

3MF to STP Converter

reaConverter offers the fastest, simplest solution for converting your 3MF files into STP in seconds - all files processed on your PC for maximum privacy and speed.

Download Free Trial

Do more with your files

Converting 3MF files for use in a workflow? reaConverter offers many ways to process files, so you can customize them according to your requirements.

Our range of editing options includes auto-processing options such as auto-rotate, auto-crop, watermarking and more. Change Color Space, copy Metadata, set DPI, manage ICC Profile, control Bit Depth.

Conversion features

User Reviews

Average User Rating:
Last updated on January 25, 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

Mechanical Engineer

"Finally an app that actually opens my weird files! Saves me from format frustration daily."

Kyle Brooks

Happy User

"This converter delivers exceptionally quick format conversions with reliable results every time."

Brian White

Happy User

"Security was our top concern when evaluating file conversion tools. reaConverter’s offline mode and role-based access controls let us lock it down for sensitive environments. No unexpected network calls or bloat — just clean, fast conversions. Even passed our pen-testing scans without a hitch."

Marcus White

Healthcare IT

"The step-by-step video makes conversion foolproof. I'd recommend this to my grandma - it's that well-explained!"

DeShawn M. Thompson

Happy User

"I'm really impressed with this software - it converts files between formats incredibly fast!"

Lin Zhang

Happy User

3MF to STP Conversion: FAQ

Can reaConverter convert 3MF to STP?

Yes! reaConverter instantly converts .3mf to .stp 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 images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert 3MF to STP online?

If you only need to convert a few 3MF files to STP format, feel free to try our free online free online 3MF to STP converter — perfect for small batches with no installation needed!

How can I turn 3MF files into STP on my computer?

The best way to change 3MFs to STPs 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 3MF to STP.

How can I automate 3MF to STP 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 3MF files to STP using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line 3mf to stp converter for batch processing.

What else can I do with reaConverter?

Convert vector images Convert picture color space Convert CAD formats Set image bit depth Copy IPTC data