Convert IRR to CAL

Convert IRR 3D models to CAL without expensive CAD software. reaConverter handles batch conversion offline with consistent output.

Looking to change IRR files to CAL format? reaConverter makes it simple — add your files, select output format, and convert entire folders in one click. Runs entirely on your hardware for maximum speed — no waiting for uploads or server queues. 3D artists rely on it when clients need different file formats.

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IRR to CAL
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IRRCAL

How to Convert Multiple IRR Files to CAL?

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 IRR files

Start reaConverter and add your .irr files. The software processes everything locally, so your files never leave your computer.

Use drag-and-drop, folder browser, or right-click conversion from Explorer.

Load your IRR files into reaConverter

3. Select CAL as output format

Select CAL from 700+ supported output formats. Choose your destination folder and adjust settings to match your needs.

Select CAL as output format

4. Start IRR to CAL conversion

Click Convert to start the batch. reaConverter processes files quickly and shows you the status of each one.

Start Conversion

Once done, reaConverter shows a summary. Click 'Show converted files' to jump straight to your CAL output.

IRR to CAL Converter

reaConverter offers the fastest, simplest solution for converting your IRR 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 IRR 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 15, 2026
"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
"The step-by-step video makes conversion foolproof. I'd recommend this to my grandma - it's that well-explained!"
DeShawn M. Thompson
DeShawn M. Thompson
Happy User
"I'm really impressed with this software - it converts files between formats incredibly fast!"
Lin Zhang
Lin Zhang
Happy User
"I firmly believe working with JPEG — the universal format supported by all devices and apps—is the wisest choice. reaConverter handles these conversions flawlessly."
Ava Thomas
Ava Thomas
Happy User

IRR to CAL Conversion: FAQ

What are IRR files?

The IRR format is associated with a game engine called Irrlicht, first launched in the early 2000s as open source by German developer Nikolaus Gebhardt. Irrlicht is written in C++ and provides a framework for creating video games compatible with various platforms, including game consoles, PCs and mobile devices. IRR files contain 3D game scenes, with data about materials, animation and other details in XML format.

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 IRR to CAL?

Yes! reaConverter instantly converts .irr 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 IRR to CAL online?

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

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

The best way to change IRRs 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 IRR to CAL.

How can I automate IRR 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 IRR 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 irr to cal converter for batch processing.

What else can I do with reaConverter?

Set file dateConvert CAD formatsSet picture bit depthChange format settingsSet new DPI

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