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GTM Converter
GTM to any format, in batch and offline. reaConverter gives you full control over quality and output settings.
How to Convert .gtm Files in Bulk
1. Install reaConverter
2. Select GTM Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless GTM 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 GTM 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
GTM files: Frequently Asked Questions
What are GTM files?
The GTM file format is a file extension used by the GPS TrackMaker software. GPS TrackMaker is a free GPS mapping software that allows users to create and edit GPS waypoints, tracks, and routes on their computer. The .gtm file format is used to save GPS track logs, which can be used to analyze and manage GPS data. The .gtm file contains information about the GPS track, such as the GPS coordinates, Altitude, and timestamp. This file format is designed primarily for GPS data management purposes and is not a widely used format.
Can reaConverter open GTM files?
reaConverter fully supports the GTM file format – open, edit, and export GTM files to any other popular file format with ease.
Do I need QGIS or ArcGIS to convert GTM files?
No. reaConverter reads GTM 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 GTM to another format?
reaConverter is a user-friendly tool for converting GTM files. Once installed on your computer, it allows you to convert all your .gtm files at once with just a few clicks. You can even convert gtm 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 GTM online?
If you only want to convert a few GTM files, you are welcome to try our free online GTM converter.
How can I turn GTM files on my computer to another format?
The best way to convert GTM 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 GTM.
How can I automate GTM 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 GTM 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 gtm converter.
What else can I do with reaConverter?
Convert RAW formatsConvert DICOM imagesCrop photoConvert microscopy filesPicture resizer
What formats can I convert a GTM file to?
Discover More
Beyond GTM conversion
Convert .gtm 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.
