DTED Digital Terrain Elevation Data level 1
File type: GIS, GPS navigation and map file
A dt1 file extension is associated with the DTED Digital Terrain Elevation Data level 1 file format.
Found 2 different file type records with the same dt1 filename suffix.
File type category:
GIS, GPS navigation and map file
Date updated: June 6, 2019
The dt1 file extension is used for DTED (Digital Terrain Elevation Data).
DTED Level 1 is the basic medium resolution elevation data source for all military activities and systems that require landform, slope, elevation, and/or gross terrain roughness in a digital format.
Use ArcGIS to open *.dt1 files.
Probably can be exported to other formats.
Programs for viewing dt1 files:
Microsoft Windows
File type category:
Game file
Date updated: September 24, 2026
Diablo II was developed by Blizzard Entertainment. Its DT1 files store sets of map tiles and related tile data used when the game constructs areas from smaller graphical sections.
DT1 files are game resources rather than ordinary image files. The game loads them together with other data files to display its environments and handle the properties of those tiles.
This is a legacy Diablo II resource format for Microsoft Windows. It may also be encountered in Diablo II modifications that replace or add game areas.
Diablo II opens DT1 files automatically when they are in the appropriate game data location or archive. A DT1 file is not normally intended to be opened as a standalone image.
For inspection or editing, use a specialised Diablo II modding or map-editing tool that supports DT1 resources. Support depends on the particular tool and game version.
DT1 files are proprietary game resources, so they do not have a useful general-purpose conversion to another file format. They should normally remain in DT1 format for use by Diablo II.
Specialised Diablo II modding tools may decode or render the tiles and export their graphics for reference, but an exported image is not a direct replacement for the original DT1 resource.
Software applications that handle other tasks involving dt1 files:
Microsoft Windows
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