What is a .HGT file?
HGT files hold elevation data from NASA’s Shuttle Radar Topography Mission.
- Did you know
- The Shuttle Radar Topography Mission mapped most of Earth’s land elevation in the year 2000.
- The HGT extension simply stands for “height”, the elevation value stored for each grid cell.
- The data came from a radar flown aboard the Space Shuttle Endeavour during an 11-day mission in February 2000.
- 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
- .HGT 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 .HGT file
- Drag a .HGT 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.