HFZ → DWG · Windows

Convert HFZ to DWG

HFZ to DWG for whole archives of tiles, layers or survey files at once, with nothing uploaded and no account required.

Got a folder full of HFZ files? reaConverter batch converts them to DWG in minutes, not hours. Local processing means instant results, even with thousands of files. No command line and no scripting, unlike the usual ogr2ogr route.

DownloadHFZ to DWG ConverterConvert
HFZ to DWG
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.hfz.DWG
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Converting files since 2001

Runs offline — nothing uploaded

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How to Convert Multiple .hfz Files to .dwg?

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 HFZ files

Load your HFZ drawings into reaConverter. No AutoCAD needed, the software reads CAD files independently.

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

Load your HFZ files into reaConverter

3. Select DWG as output format

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

Select DWG as output format

4. Start HFZ to DWG conversion

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

Start Conversion

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

Step by step

How It Works

reaConverter offers the fastest, simplest solution for converting your HFZ files into DWG without GIS software - all files processed on your PC for maximum privacy and speed.

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Technical note

HFZ to DWG: what to expect from the conversion

Geospatial coordinates are absolute positions on the earth, and they are large: a projected easting runs to six or seven digits, while latitude and longitude are small decimals. DWG expects a drawing laid out near its own origin in millimetres or inches. The geometry itself converts correctly, but it can land tens of kilometres from 0,0, or arrive at a scale where an entire county is forty units across. Zoom to extents first, then measure one known distance before dimensioning anything. An HFZ file has a pixel count and a DPI value, and no real-world size at all. DWG is a drawing where one unit means one millimetre or one inch, so the conversion has to assign a scale. Set the DPI before the run rather than resizing afterwards, then measure one feature of known length in the output and scale the drawing once to match it. Everything downstream, from dimensioning to cutting, rests on that single check.

Map Data Workflow

From map data to a working drawing

Site plans, utility routes and parcel boundaries often start out as HFZ and end up in DWG. reaConverter turns the layers into drawing entities in batch, so a full project folder moves across in one run.

  • Convert every layer in a folder to DWG with the same settings
  • Go the other way too, from DWG to Shapefile, when the GIS team needs the drawings back
  • Render the same data to PDF for a quick review copy
  • Pick up new data automatically with Watch Folders, or script the job from the command line

Everything runs on your PC, which matters for cadastral, utility and client data that should not pass through an upload form.

GIS data conversion

User reviews

What people say after the first batch

Average User Rating:4.8
Last updated on September 13, 2026
When uni gives you DWG files but you're not an CAD expert yet... 🥴 Thank goodness for reaConverter! First try success → now studying these blueprints on my iPad. Lifesaver for freshman year! #EngineeringStudent
Alan Cox
Alan Cox
Satisfied Customer
My son is training to become an architect, so he's learning Autodesk, AutoCAD, and other design software. With so many file formats in this field, we needed a reliable conversion tool fast. reaConverter was the perfect solution - lightning-fast conversions, zero lag, and it works completely offline!
Jerry Morris
Jerry Morris
Satisfied Customer
I needed to convert DWG to DXF for a laser cutter, and reaConverter did it flawlessly. The geometry remained intact, and the line weights were preserved. I've tried free tools, but they always mess up arcs. This is the only one I trust.
Sarah W.
Sarah W.
Product Designer
As someone new to CAD file conversion, I was impressed by how effortlessly reaConverter transformed complex DWG files into publication-ready JPGs. The process was remarkably intuitive compared to other tools I've tested.
Jennifer Garcia
Jennifer Garcia
Satisfied Customer
Our school uses AutoCAD, but students don't have the software at home. reaConverter lets us convert assignments to PDF so they can review at home. It's affordable, easy to install, and handles batch conversion of 30+ student files in minutes.
Prof. James Harrison
Prof. James Harrison
Satisfied Customer
I typically avoid installing too many programs to keep my hard drive clutter-free, but constantly uploading/downloading files for conversion became too time-consuming. That's why I chose reaConverter when I needed to transform DWG files into readable PDFs—and it performs flawlessly!
Bruce Howard
Bruce Howard
Satisfied Customer

FAQ

HFZ to DWG Conversion

What are HFZ files?

HFZ is the compressed version of the HF2 terrain height map format, in which the whole file is packed with the gzip method. A height map is a rectangular grid where every cell holds the elevation of one spot of a landscape, and such grids can grow very large when they cover wide areas in fine detail. HFZ keeps them small by combining two ideas: heights are stored as differences between neighboring cells, and the author chooses how precise the heights need to be. The same data can also be found with the .hf2.gz extension. In a published comparison, a terrain saved as HFZ took about 1.4 MB, while the same terrain in the TER format packed with gzip took 1.8 MB, at equal vertical precision.

What are DWG files?

DWG (which stands for "Drawing") is a proprietary format of AutoCAD, a program widely used for creating engineering and architectural projects. The format is also a default extension used by several other computer-aided design (CAD) pieces of software, including IntelliCAD, Caddie or DraftSight. DWG files contain complex design structures including several layers, which can be 2-dimensional or 3-dimensional.

Can reaConverter convert HFZ to DWG?

Yes! reaConverter instantly converts .hfz to .dwg 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.

What is reaConverter used for?

reaConverter is a Windows converter for 800+ formats, GIS data among them. For HFZ to DWG it replaces the usual detour through QGIS, ArcGIS or ogr2ogr: add the files, pick the output format, and the whole batch converts offline. Surveyors, planners and engineering teams use it to pass data between GIS, CAD and everyday document 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 HFZ to DWG online?

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

How can I turn HFZ files into DWG on my computer?

The best way to change HFZs to DWGs 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 HFZ to DWG.

How can I automate HFZ to DWG 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 HFZ files to DWG using the command prompt?

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

What else can I do with reaConverter?

Convert GIS filesTrace images to vectorChange bit depthConvert Gerber imagesConvert RGB to CMYK

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