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CAP Converter
Free browser-based CAP converter with no signup. Your files stay local. reaConverter for Windows adds automation, editing, and 800+ other formats.
How to Convert .cap Files in Bulk
1. Install reaConverter
2. Select CAP Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless CAP 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.
3D Toolkit
Do more with your 3D models
Opening CAP usually takes the program that made it. reaConverter reads it directly and converts models to STL, GLB, STEP or images.
- Move models into STL for printing, STEP for CAD, or GLB and glTF for web viewers
- Script 3D conversions from the command line
- Render models to JPG, PNG or PDF at any angle, rotated on X, Y and Z
- Convert new models as they arrive with Watch Folders
User reviews
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Average User Rating:Last updated on September 01, 2026
Questions & Answers
CAP files: Frequently Asked Questions
What are CAP files?
CAP is a Sarine file type that stores the result of scanning a rough diamond. It was introduced in Advisor version 2.0 as an extension of the older STN format, which kept only the stone information, and a CAP file also contains the video images of the stone, so that when it is loaded, the program can show the pictures and create the three-dimensional model of the rough. The Galaxy inclusion mapping systems produce such data: a camera records a video of the outside of the stone, and a proprietary scanner maps its interior, which gives an accurate 3D model of the rough diamond with all the inclusions clearly marked, whether they are transparent or black, such as cracks, piques, bubbles, and clouds. Galaxy systems handle stones from small sizes up to about 20 carats in the Galaxy 1000 and up to about 200 carats in the Galaxy XL. The output goes directly to Sarine Advisor, which uses the inclusion map to plan the polished stone and predict its clarity. The format is proprietary, and a CAP file from Galaxy can be opened only with Advisor. Supported by Sarine Advisor.
Can reaConverter open CAP files?
reaConverter fully supports the CAP file format – open, edit, and export CAP files to any other popular file format with ease.
reaConverter also lets you:
- convert Sarine Galaxy diamond scans into multi-angle raster images or 3D models
- create GIF animation of Sarine Galaxy diamond scans
Do I need 3D or CAD software to convert CAP files?
No. reaConverter reads CAP files on its own, so the conversion needs no Blender, 3ds Max or Maya installation. It runs offline on your PC and handles whole folders at once, which suits model libraries, supplier deliveries and product ranges that have to reach people working in other software.
How do I change CAP to another format?
reaConverter is a user-friendly tool for converting CAP files. Once installed on your computer, it allows you to convert all your .cap files at once with just a few clicks. You can even convert CAP models directly from Windows Explorer using the right-click menu — fast and convenient.
Can I convert CAP online?
If you only want to convert a few CAP files, you are welcome to try our free online CAP converter.
How can I turn CAP files on my computer to another format?
The best way to convert CAP 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 CAP.
How can I automate CAP 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 CAP 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 cap converter.
What else can I do with reaConverter?
Convert microscopy filesResize picturesConvert CAD formatsSet file dateConvert vector images
What formats can I convert a CAP file to?
Discover More
Beyond CAP conversion
Convert .cap files in batches of any size, with editing and processing applied along the way. The same tool also handles 800+ other formats, including CAD, medical imaging, and GIS.
