REC → CAL · Windows

Convert REC to CAL

Stop converting REC files one by one. reaConverter processes entire folders to CAL automatically. Add files, pick settings, click Convert.

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

DownloadREC to CAL ConverterConvert
REC to CAL
Online
.rec.CAL
4.8

Converting files since 2001

Runs offline — nothing uploaded

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How to Convert Multiple .rec 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 REC files

Open reaConverter and add your REC files. You can load individual files, entire folders, or even nested subfolders.

Drop your REC files into the window or use File menu to browse and select folders.

Load your REC files into reaConverter

3. Select CAL as output format

Choose CAL as the target format. Pick a destination folder or let reaConverter save files alongside the originals.

Select CAL as output format

4. Start REC to CAL conversion

Hit Convert and let reaConverter do the work. The progress window shows status for each file in real time.

Start Conversion

After conversion, find your CAL files in the output folder. Click 'Show converted files' to open it directly.

Step by step

How It Works

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

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Map Data Workflow

Turn GIS data into something anyone can open

Not everyone who needs to see REC data has GIS software. reaConverter renders it to CAL for a report, an email or a slide, and handles a whole folder in one run.

  • Render every file in a folder to CAL with the same size and settings
  • Set DPI and output dimensions before the run, not afterwards
  • 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 27, 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
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.
David R.
IT Solutions Architect
So simple! I just needed to convert a couple of files to another format, and for such a straightforward task, the online converter worked perfectly — delivering the files I needed in no time. Excellent service!
Kenneth D. Carter
Kenneth D. Carter
Satisfied Customer
I run a small design agency, and reaConverter has saved me countless hours. The batch processing is lightning-fast, and the ability to convert hundreds of files into different formats at once is a game-changer. Highly recommend!
Mark T.
Mark T.
Satisfied Customer

FAQ

REC to CAL Conversion

What are REC files?

The REC format is associated with EpiInfo, a public collection of software tools available for worldwide researchers and practitioners in the field of public health. EpiInfo provides access to statistics, databases and various other tools for assisting outbreak investigations, developing disease surveillance systems, offering educational tools in the field of epidemiology etc. EpiInfo is produced by the US Centers for Disease Control and Prevention.

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 REC to CAL?

Yes! reaConverter instantly converts .rec 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 REC files 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 REC to CAL 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 REC to CAL online?

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

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

The best way to change RECs 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 REC to CAL.

How can I automate REC 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 REC 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 rec to cal converter for batch processing.

What else can I do with reaConverter?

Convert RAW photo formatsConvert PDF filesAdd text on picturesConvert Gerber filesConvert picture color space

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