SUL Converter

Get reaConverter, a trusted software for SUL file conversion. Convert between a great number of file formats, including SUL.

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reaConverter
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SUL Files
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How to Convert .sul Files in Bulk

1. Install reaConverter

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

2. Select SUL Files

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

3. Start Conversion

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

Convert SUL on your PC

For quick and effortless SUL 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 SUL 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 August 29, 2025
"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
"reaConverter is pure gold! Rock-solid performance with zero crashes. No internet needed—perfect for travel or low-connectivity work. The ultimate offline alternative to sketchy web converters. Plus, the desktop version keeps sensitive files secure since nothing ever gets uploaded to the cloud."
Malik T. Martin
Malik T. Martin
Satisfied Customer
"This program is incredibly simple and user-friendly, even beginners can use it with ease. It supports batch processing, works offline, and runs smoothly on my aging Acer Aspire laptop. Best of all, the output quality is outstanding!"
Kevin Harris
Kevin Harris
Happy User
"Exactly what I needed! Simple, fast, and no bloat. I use reaConverter Lite to resize and convert batches of images for documents. The presets make it super easy, and everything works smoothly."
Mark Jones
Mark Jones
Happy User
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Kyle Brooks
Happy User
"Security was our top concern when evaluating file conversion tools. reaConverter’s offline mode and role-based access controls let us lock it down for sensitive environments. No unexpected network calls or bloat — just clean, fast conversions. Even passed our pen-testing scans without a hitch."
Marcus White
Marcus White
Healthcare IT

SUL files: Frequently Asked Questions

What are SUL files?

SUL is an old and obsolete image format file associated with GFA RayTrace — a program designed for Atari ST computers. The software was released in the late 1980s and allowed users to operate with 3D objects in an incipient stage, usually implying a lot of time for required calculations. SUL files are now considered rare, so opening them probably requires conversion.

Can reaConverter open SUL files?

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

How do I change SUL to another format?

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

Can I convert SUL online?

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

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

The best way to convert SUL 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 SUL.

How can I automate SUL 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 SUL 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 sul converter.

What else can I do with reaConverter?

Convert vector filesConvert picture color spaceConvert GIS filesConvert Gerber filesCrop picture

What formats can I convert a SUL 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 

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