Convert RDC to CAL

RDC to CAL conversion that preserves quality. reaConverter gives you control over color space, resolution, and compression.

Online converters too slow for your RDC files? reaConverter works locally and handles unlimited batches. All processing runs locally on your PC, so your files stay private and secure. Preserves RAW quality with options for color space and compression settings.

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RDC to CAL
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RDCCAL

How to Convert Multiple RDC Images to CAL?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting RDC files in under two minutes. Built-in editing tools let you resize, crop, or watermark as you convert.

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Install reaConverter

2. Load your RDC files

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

You can drag-and-drop files, browse to a folder, or add entire directory trees including subfolders.

Load your RDC 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 RDC to CAL conversion

Click the Convert button to start. reaConverter will process all your files with the settings you selected.

Start Conversion

When finished, your new .cal files will be waiting in the destination folder.

RDC to CAL Converter

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

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Do more with your images

Converting RDC images for use in a larger project? With reaConverter, you can convert, edit, and enhance your images in one streamlined process.

Our range of editing options includes such image processing actions as Resize, Rotate, Crop, Color Replace, Watermarks and more. Adjust actions include RGB, HLS, HSV, Brightness and Contrast. Auto-processing options are also available, such as auto-rotate and auto-crop.

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User Reviews

Average User Rating:
Last updated on January 25, 2026
"An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!"
Logan B.
Logan B.
Satisfied Customer
"I use the online converter — it’s quick and hassle-free!"
Jian Wong
Jian Wong
Happy Online User
"Working in a print studio means constantly juggling obscure file formats. I used to waste hours Googling converters or installing random software — until reaConverter became my Swiss Army knife. Install it once, and you're set forever. No internet? No problem!"
Helen Evans
Helen Evans
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"Your solution was buried deeper in search results than it should be. After struggling with unclear alternatives, I found your guides — finally, instructions that made sense for a first-time user like me. Excellent work!"
Richard E. Miller
Richard E. Miller
Satisfied Customer
"Converts files in seconds! Finally a tool that's both fast and simple to use."
Wei Chen
Wei Chen
Happy User
"I'd been searching for reliable conversion software forever — reaConverter has everything I need! After installing and watching the tutorial, I had my files converted to the perfect format in minutes. Flawless experience!"
Sanjay Mehta
Sanjay Mehta
Satisfied Customer

RDC to CAL Conversion: FAQ

What are RDC files?

RDC is a RAW image format associated with Rollei cameras. This German brand is well known for the Rolleiflex and Rolleicord series, which include several high-end models that were initially developed in the 1930s and developed throughout the following decades. In the early 1990s, the brand became part of the South-Korean group Samsung, but nowadays it is again based in Germany and continues to provide medium-sized, 35mm and subminiature cameras for an exclusive target public. The RDC format can be opened by a limited number of viewers, so the best option is to convert it to a better known and more accessible format, such as JPEG or TIFF.

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 RDC to CAL?

Yes! reaConverter instantly converts .rdc 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.

What is reaConverter used for?

reaConverter is a software program used for converting images and other types of files from one format to another. It supports a wide range of file formats and allows users to convert multiple files at once, making it a valuable tool for graphic designers, photographers, and other professionals who work with digital images. reaConverter also includes features for resizing, cropping, and editing images, along with batch processing capabilities that help automate repetitive tasks.

Can I convert RDC to CAL online?

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

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

The best way to change RDCs 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 RDC to CAL.

How can I automate RDC 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 RDC 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 rdc to cal converter for batch processing.

What else can I do with reaConverter?

Convert DICOM imagesResize pictureConvert Gerber imagesCrop picturesConvert GIS files

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