Convert PRJ to STP

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

Need to convert PRJ to STP? reaConverter handles batch conversion with ease, processing hundreds of files at once while preserving quality. Your files never leave your machine. No third-party servers, no privacy concerns. 3D files convert without expensive modeling software licenses.

1. Download and Install reaConverter

Download reaConverter and install it in seconds. The setup is straightforward — no complex configuration, no extra software required.

Install reaConverter

2. Load your PRJ files

Launch reaConverter and load the PRJ files you want to convert. Add a few files or thousands, batch processing handles them all.

Drag-and-drop PRJs directly into reaConverter or use the folder browser to load entire directories.

3. Select STP as output format

Set STP as output format and select where to save your converted files. Customize quality settings if needed.

4. Start PRJ to STP conversion

Press Convert to begin processing. You can watch the progress or minimize and let it run in the background.

Your converted STP files will appear in the destination folder as soon as processing completes.

PRJ to STP Converter

reaConverter offers the fastest, simplest solution for converting your PRJ 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 PRJ 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

"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.

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

Satisfied Customer

"I run a small design agency, and reaConverter has saved me countless hours. The batch processing is lightning-fast, and the ability to convert hundreds of files into different formats at once is a game-changer. Highly recommend!"

Mark T.

Satisfied Customer

"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

PRJ to STP Conversion: FAQ

Can reaConverter convert PRJ to STP?

Yes! reaConverter instantly converts .prj 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 PRJ to STP online?

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

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

The best way to change PRJs 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 PRJ to STP.

How can I automate PRJ 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 PRJ 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 prj to stp converter for batch processing.

What else can I do with reaConverter?

Convert RAW photo formats Convert vector images Convert picture color space Convert GIS files Convert CAD formats