File Extension Library


.HGT File Extension

  • Category: GIS Files
  • Format: Binary

What are .HGT files and how to open them?

Can't open .HGT file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .HGT file.

What is a .HGT file extension?

.HGT file extension has been classified as GIS Files. The format of .HGT file is Binary

.HGT is SRTM Elevation Data File

GIS data file stored in the Shuttle Radar Topography Mission (SRTM) format; contains global elevation data captured during NASA space missions; may include up to a one arcsecond resolution; used for analyzing the earth's topography and for generating topographical images.

Some data in the original SRTM dataset is missing due to limits of the space missions. These areas are referred to as "voids." Efforts have been made to fill in the missing gaps using interpolation methods. For example, the National Geospatial-Intelligence Agency (NGA) created the "Version 2" and "Version 2.1" datasets, which include modified data. Therefore, some downloaded HGT files may include interpolated data.

HGT files are named with longitude and latitude coordinates. For example, N00W177.hgt contains data for one degree of latitude (00-01 North) and one degree of longitude (177-178 West).

NOTE: The "HGT" extension is an abbreviation for "height."

List of all softwares that can open the SRTM Elevation Data File
Windows
Safe Software FME Desktop
ESRI ArcGIS for Desktop
DG Terrain Viewer
DG SRTM Void Killer
SRTMFill
VTBuilder
Linux
DG Terrain Viewer

How to fix problems with .HGT files

  1. You need to update the application that you normally use to open .HGT files. Only the latest version of the software supports the current .HGT file format
  2. You need to check the .HGT file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)