Convert GBR to CAL

GBR to CAL converter that respects your privacy. No cloud uploads, no file size limits — just fast offline batch processing.

Online converters too slow for your GBR files? reaConverter works locally and handles unlimited batches. All processing runs locally on your PC, so your files stay private and secure.

1. Download and Install reaConverter

reaConverter installs quickly on any Windows PC. No dependencies, no bloatware — just a clean setup that's ready to use immediately.

Install reaConverter

2. Load your GBR files

Add GBR files to reaConverter. One file or a thousand, the process is the same. Everything runs locally on your machine.

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

3. Select CAL as output format

Select CAL from the output format list and set your destination folder. You can also adjust quality and compression settings.

4. Start GBR to CAL conversion

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

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

GBR to CAL Converter

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

Download Free Trial

Do more with your files

Converting GBR 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

User Reviews

Average User Rating:
Last updated on January 25, 2026

"Flawless Gerber Conversions – Saved Us Countless Hours! Processes 50+ GBR files at once (drills, copper layers, silkscreens), auto-renames outputs (e.g., ProjectX_top_copper.pdf)"

Arthur Hughes

Satisfied Customer

"As a PCB engineer, I rely on reaConverter to batch convert GBR files to PDF and PNG for client reports. It preserves layer accuracy perfectly, and the command-line automation saves me hours per project. Finally, a tool that handles Gerber files without glitches!"

Michael Chen

Senior PCB Designer

"This software just works! My old laptop can’t handle Photoshop, but reaConverter flies through conversions without breaking a sweat. Wi-Fi gone? Still strong!"

Robert Williams

Happy User

"Rare software that actually does it all! Converts anything, beautiful interface, and never lets me down. A must-have!"

Henry R.

Happy User

"For cross-platform compatibility, JPEG remains the gold standard. reaConverter’s precision conversions ensure perfect results every time, whether for presentations, websites, or client deliverables."

Paul Baker

Happy User

"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.

IT Solutions Architect

GBR to CAL Conversion: FAQ

Can reaConverter convert GBR to CAL?

Yes! reaConverter instantly converts .gbr 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 GBR to CAL online?

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

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

The best way to change GBRs 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 GBR to CAL.

How can I automate GBR 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 GBR 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 gbr to cal converter for batch processing.

What else can I do with reaConverter?

Change format settings Change DPI Convert RAW photos Copy metadata (EXIF, IPTC)Convert DICOM files