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CUB Converter
Batch convert CUB files with the same settings across a whole project, from a handful of layers to an archive of tiles.
How to Convert .cub Files in Bulk
1. Install reaConverter
2. Select CUB Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless CUB 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.
GIS Toolkit
Do more with your GIS data
Need CUB data as something anyone can open? reaConverter renders imagery and elevation grids into standard images and documents without QGIS or ArcGIS, and works through whole folders in one pass.
- Render imagery, elevation grids and scanned charts to TIFF, PNG, JPG or PDF
- Resize, crop and set DPI on the output in the same run
- Bring tiles, scenes and grids from many sources into one consistent format
- Convert incoming survey and field data automatically with Watch Folders
- Script GIS conversions from the command line for pipelines and scheduled jobs
- Keep cadastral, utility and client data on your PC: nothing is uploaded
User reviews
From those who tried it
Average User Rating:Last updated on July 28, 2026
Questions & Answers
CUB files: Frequently Asked Questions
What are CUB files?
CUB (USGS Astrogeology ISIS Cube, Version 3) is a hybrid text and binary raster container for planetary image data. The file begins with a keyword-based label that opens with the IsisCube object and includes a Core object specifying the byte offset of the pixel data, the storage format, dimensions in samples, lines, and bands, and a Pixels group with the data type (8-bit unsigned, 16-bit signed, or 32-bit real), byte order, base, and multiplier. By default, pixels are written in tiles of 128 by 128 samples, which speeds up random access, though a band sequential layout is also possible. Real-valued cubes reserve special floating-point values for null, low and high instrument saturation, and low and high representation saturation, which must be masked during conversion. The Mapping group carries the projection name, target radii, latitude and longitude conventions, pixel resolution, and upper-left corner coordinates, enabling georeferencing on other bodies. Conversion to graphics means untiling the data, applying the multiplier and base, masking special values, stretching the range to a grayscale image, and optionally combining three bands into an RGB composite. The result can be saved as PNG, JPEG, TIFF, or GeoTIFF. Supported by ISIS, QGIS, Global Mapper, and ENVI.
Can reaConverter open CUB files?
reaConverter fully supports the CUB file format – open, edit, and export CUB files to any other popular file format with ease.
Do I need QGIS or ArcGIS to convert CUB files?
No. reaConverter reads CUB files on its own, so the conversion needs no GIS installation and no licence. It handles whole folders at once, which suits survey archives, tile sets and data deliveries that have to reach people working in other software.
How do I change CUB to another format?
reaConverter is a user-friendly tool for converting CUB files. Once installed on your computer, it allows you to convert all your .cub files at once with just a few clicks. You can even convert cub images directly from Windows Explorer using the right-click menu — fast and convenient.
Why choose offline conversion with reaConverter?
Keep your sensitive data 100% private with offline processing that never exposes files to cloud risks. Our software meets strict compliance standards (GDPR, HIPAA, CCPA) while handling confidential documents for legal, healthcare and financial sectors.
Can I convert CUB online?
If you only want to convert a few CUB files, you are welcome to try our free online CUB converter.
How can I turn CUB files on my computer to another format?
The best way to convert CUB 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 CUB.
How can I automate CUB 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 CUB 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 cub converter.
What else can I do with reaConverter?
Convert RAW photo formatsConvert vector imagesChange image DPIConvert PDFAdd text on pictures
What formats can I convert a CUB file to?
Discover More
Beyond CUB conversion
Convert .cub 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.
