Convert HMP to CAL

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

Got a folder full of HMP files? reaConverter batch converts them to CAL in minutes, not hours. Local processing means instant results, even with thousands of files. No CAD software required — handles 3D models independently.

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HMP to CAL
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HMPCAL

How to Convert Multiple HMP Files to CAL?

1. Download and Install reaConverter

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

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Install reaConverter

2. Load your HMP files

Add your HMP 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.

Load your HMP files into reaConverter

3. Select CAL as output format

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

Select CAL as output format

4. Start HMP to CAL conversion

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

Start Conversion

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

HMP to CAL Converter

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

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Do more with your files

Converting HMP 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
Image editing

User Reviews

Average User Rating:
Last updated on January 13, 2026
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Kyle Brooks
Happy User
"This converter delivers exceptionally quick format conversions with reliable results every time."
Brian White
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
Marcus White
Healthcare IT
"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

HMP to CAL Conversion: FAQ

What are HMP files?

The HMP file format is associated with a game engine called 3D Game Studio or 3DGS, allowing users to create their own games and publish them for free. The engine provides a model or terrain editor, as well as a series of 3D modelling tools and templates, facilitating game development even by users with no programming knowledge. HMP files contain terrain data and facilitate building a 3D model.

What are CAL files?

A CAL image file represents a monochrome bitmap image that uses the CALS raster image standard for storing graphics data. This standard was created in the 1980s by the US Department of Defence as a compressed interchangeable image format. CAL and CALS are extensions used for similar purposes.

Can reaConverter convert HMP to CAL?

Yes! reaConverter instantly converts .hmp to .cal 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 HMP to CAL online?

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

How can I turn HMP files into CAL on my computer?

The best way to change HMPs to CALs 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 HMP to CAL.

How can I automate HMP to CAL 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 HMP files to CAL using the command prompt?

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

What else can I do with reaConverter?

Convert vector filesConvert picture color spaceChange file dateConvert PDF filesWatermark photo

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