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MTW Converter
Turn MTW files into JPG, PNG, PDF and 800+ other formats. reaConverter handles bulk conversion with consistent quality.
How to Convert .mtw Files in Bulk
1. Install reaConverter
2. Select MTW Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless MTW 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 MTW 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
MTW files: Frequently Asked Questions
What are MTW files?
MTW (Raster Matrix Format, matrix flavor) is a tiled raster designed for terrain heights. The grid is cut into square tiles, 256 by 256 cells by default, which lets a program read only the part of a large relief that it needs. The file has a single channel, and a cell may be a 16-bit integer or a 32-bit or 64-bit floating-point number, so the format can store both coarse elevation models and precise measurements. Besides the heights, the file records the minimum and maximum elevation, the units in which the numbers are expressed, and a flag that tells whether they are absolute or total elevations. There is also a compression method for 32-bit integer heights, and files that would be larger than the usual limit can be written in a huge-file variant, which is supported by GIS Panorama from version 11. To convert an MTW file to graphics, a program reads the tiles, converts the heights to meters using the stored units, and builds a grayscale heightmap, a colored elevation map, or a shaded relief picture. For 8-bit output the range between the minimum and the maximum is stretched, while 16-bit TIFF and GeoTIFF keep fine height steps and coordinates. The result can be saved as PNG, JPEG, TIFF, or GeoTIFF. Supported by GIS Panorama and MapTiler Engine.
Can reaConverter open MTW files?
reaConverter fully supports the MTW file format – open, edit, and export MTW files to any other popular file format with ease.
Do I need QGIS or ArcGIS to convert MTW files?
No. reaConverter reads MTW 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 MTW to another format?
reaConverter is a user-friendly tool for converting MTW files. Once installed on your computer, it allows you to convert all your .mtw files at once with just a few clicks. You can even convert mtw 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 MTW online?
If you only want to convert a few MTW files, you are welcome to try our free online MTW converter.
How can I turn MTW files on my computer to another format?
The best way to convert MTW 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 MTW.
How can I automate MTW 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 MTW 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 mtw converter.
What else can I do with reaConverter?
Vectorize imagesChange bit depthConvert medical imagesResize photosChange format settings
What formats can I convert a MTW file to?
Discover More
Beyond MTW conversion
Convert .mtw 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.
