RAS Converter

Our fast and easy RAS file converter will help you avoid spending countless hours trying to figure out how to convert multiple .ras files at once.

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RAS Files
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How to Convert .ras Files in Bulk

1. Install reaConverter

Download reliable RAS conversion software to convert multiple .ras files and folders in one go.
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Install reaConverter

2. Select RAS Files

Select RASs from a folder or drag and drop them into reaConverter, then choose the desired output format.
reaConverter - Load RAS files

3. Start Conversion

Click Convert to start the bulk conversion of all selected RAS files. The process will begin right away.
reaConverter - Start RAS conversion

Convert RAS on your PC

For quick and effortless RAS file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.

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Do more with your files

Converting RAS files for use in a larger project? 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 September 27, 2025
"reaConverter's automation tools have completely changed how I manage my projects. I often work with large batches of illustrations and used to spend hours converting and organizing them. Now, with Watch Folders, I just set the rules once and everything is handled automatically, exactly how I need it. This is pro-level automation made simple."
Chloe M.
Chloe M.
Freelance Illustrator
"My photography business relies on fast, accurate processing of images. With reaConverter’s Watch Folder, I drop my RAW photos into a folder and they’re instantly converted to high-res JPEGs with custom naming and watermarking. It’s streamlined my post-processing more than I imagined possible."
Emily R.
Emily R.
Photographer
"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
"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
Satisfied Customer
"Before reaConverter, I was the ‘File Conversion Guy’ at work — a title I never asked for and definitely didn’t want. Then I found the Watch Folders feature, and suddenly I was free! Now, files convert themselves while I sip coffee and pretend I'm still working hard. My coworkers think I'm a wizard. Thanks reaConverter, for saving my sanity and boosting my fake productivity!"
Ben H.
Ben H.
Overwhelmed Office Hero
"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

RAS files: Frequently Asked Questions

What are RAS files?

A RAS file in the CALS Raster format is a monochrome bitmap image standardized under the U.S. Department of Defense’s Continuous Acquisition and Life-cycle Support (CALS) initiative. Designed for technical documentation, it stores 1-bit raster graphics—typically engineering drawings or scanned schematics—in a simple, resolution-independent structure that preserves fine line detail while keeping file sizes modest. Although now largely superseded by more versatile formats, CALS .ras files remain common in legacy defense and aerospace archives.

Can reaConverter open RAS files?

reaConverter fully supports the RAS file format – open, edit, and export RAS files to any other popular file format with ease.

How do I change RAS to another format?

reaConverter is a user-friendly tool for converting RAS files. Once installed on your computer, it allows you to convert all your .ras files at once with just a few clicks. You can even convert ras images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert RAS online?

If you only want to convert a few RAS files, you are welcome to try our free online RAS converter.

How can I turn RAS files on my computer to another format?

The best way to convert RAS files on your PC is to get 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 RAS.

How can I automate RAS files conversion?

reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.

Can I convert RAS files using scripts or the command-line interface?

reaConverter provides full access to all its features from the Windows command-line shell, including the command-line ras converter.

What else can I do with reaConverter?

Change format settingsChange DPIConvert GIS filesConvert CAD formatsSet bit depth

What formats can I convert a RAS file to?
ai  apng  avif  bmp  bpg  cal  cg4  cgm  cin  dcx  dds  dgn  dis  drw  dwf  dwg  dxf  emf  epi  eps  fax  fits  flif  gbr  gif  hpg  hru  ico  iff  iges  igs  jp2  jpeg  jpg  jxl  jxr  mif  mtv  pcl  pct  pcx  pdf  pgm  pic  plt  png  ppm  prc  ps  psd  qoi  qrt  rad  rla  sgi  shp  svg  svgz  tga  tif  tiff  webp  webpll  wmf  wmz  wpg  wrl  xbm  xpm 

Discover more

Explore our efficient RAS file converter that saves you time and effort by converting multiple .ras files into different formats.
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