HG → STP · Windows

Convert HG to STP

HG to STP with consistent quality. reaConverter handles 3D files in batch, which helps when teams run different software.

Batch HG to STP conversion doesn't have to be complicated. reaConverter processes entire folders with consistent quality settings. Works offline with no internet required, so you can convert anywhere, anytime. Manufacturing teams use it to share models across departments.

DownloadHG to STP ConverterConvert
HG to STP
Online
.hg.STP
4.8

Converting files since 2001

Runs offline — nothing uploaded

Read what our users say →

How to Convert Multiple .hg Files to .stp?

1. Download and Install reaConverter

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

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Install reaConverter

2. Load your HG files

Open reaConverter and import your .hg files. No file limits, no slowdowns. Add as many as you need.

Drag files into the window, use the Add Files button, or select entire folders.

Load your HG files into reaConverter

3. Select STP as output format

Select STP as target format and pick where to save results. You can keep default settings or fine-tune the output.

Select STP as output format

4. Start HG to STP conversion

Hit Convert to process your files. The log window shows progress, timing, and status for every file.

Start Conversion

Conversion complete? Your STP files are saved to the destination folder, ready to use.

Step by step

How It Works

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

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3D Workflow

From flat drawing to 3D model

Need a 3D STP from a flat HG? reaConverter extrudes the outlines to the height you set and processes a whole folder in one run.

  • Set the extrusion height in millimetres before the run
  • Pick up new models automatically with Watch Folders
  • Convert a whole folder of drawings in one pass
  • Keep unreleased designs and client models on your PC: nothing is uploaded
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
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
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.
Mark T.
Satisfied Customer
An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness.
Elena Anderson
Elena Anderson
Happy User
Enable shell integration for lightning-fast file conversions directly from Windows Explorer.
R. Lewis
R. Lewis
Happy User

FAQ

HG to STP Conversion

What are HG files?

The .hg HPGL stands for Hewlett-Packard Graphics Language, and it’s a vector graphics file format used primarily to control plotters — devices that draw images using pens.

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.

Can reaConverter convert HG to STP?

Yes! reaConverter instantly converts .hg 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 HG files 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 HG to STP 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 HG to STP online?

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

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

The best way to change HGs 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 HG to STP.

How can I automate HG 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 HG 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 hg to stp converter for batch processing.

What else can I do with reaConverter?

Convert PDF filesAdd watermark on imageConvert medical imagesResize imagesConvert RAW photos

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