Click the "Select File" button above, and choose your DTM file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert DTM to another file type
To convert DTM Terrain models to another format, you need Global Mapper or other GIS software.
Convert a file to DTM
To convert other file formats to the "Digital Terrain Model File" file type, you need software like Global Mapper or a similar tool.
About DTM files
The .DTM format primarily represents a Digital Terrain Model. It stores 3D geospatial data, mapping the bare-earth topographical surface without vegetation or buildings. Professionals use it heavily in civil engineering, land surveying, and bathymetry to calculate volumes, design roads, and map seabeds. To open a .DTM natively, you generally need specialized software like Global Mapper, Teledyne PDS, or civil engineering tools from Nemetschek. .DTM files are notoriously difficult to handle outside their native ecosystems. Because 'DTM' is a generic acronym, many different vendors use the .DTM extension for entirely different internal structures. This proprietary fragmentation means a file created in Teledyne PDS might not import correctly into a standard CAD program. Furthermore, they require expensive, resource-heavy software to render and are completely unsupported by web browsers or generic image viewers. To share this data or use it in other systems, you must convert it. For CAD workflows, convert to DXF or DWG. For broad GIS compatibility, use DEM (Digital Elevation Model) or TIFF (GeoTIFF). For quick visual sharing, generate a PDF or PNG map. Drag and drop your file to analyze and convert it - free, online, and without installing software. Rarely, .DTM files can also be ZIP-compressed Printplus paper lists, audio modules (Digital Tracker Module), or even TAS (Tool-Assisted Speedrun) inputs for the Dolphin Emulator.
Use Convert.Guru to open and convert your DTM file.
If you want to convert DTM file to DEM, XML, DXF, DWG, TIN, TIFF, TIF, MP4, MP3, WAV, AAC or FLAC, you can use Global Mapper or similar software from the "3D Surface Topography Storage" category. In the File menu, look for Save As… or Export….
To convert MIDI, AAC, TTA, AU, WV, DTS, MID, FLAC, RA, MP3, PCM or WAV files to DTM, try Global Mapper or another comparable tool in the "3D Surface Topography Storage" category.
The DTM Converter Story
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our DTM converter.