What is a .DT1 file?
DT1 is Digital Terrain Elevation Data at medium resolution.
- Did you know
- DTED levels 0 to 2 store terrain elevation at increasing detail.
- Level 1 uses a 3-arc-second post spacing, around a 100-metre grid, the resolution much of NASA’s SRTM was released at.
- Like all DTED, it stores elevations as signed-magnitude 16-bit integers in big-endian byte order.
- What Analyser reads
- Inspect geospatial and GIS files without a map: TopoJSON, OpenStreetMap XML, Esri Shapefile siblings (SHP/SHX/DBF/PRJ/CPG), world files, GML, NMEA GPS logs, IGC flight logs, MapInfo TAB/MIF, GDAL VRT, PMTiles, DTED terrain, Esri ASCII grids and SRTM .hgt - surfacing CRS/EPSG, feature/record counts, bounding boxes and elevation ranges. GRIB/NetCDF/GeoPackage/MBTiles/MrSID/ECW identified.
- Depth of analysis
- .DT1 is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .DT1 file
- Drag a .DT1 file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.