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USGS - science for a changing world

Shuttle Radar Topography Mission



Data Format

Data Format

SRTM raster data is provided in the following formats based on customer preference:

ESRI BIL: A proprietary ESRI format based on a .bil data file extension and a .hdr describing the data file.

Military DTED: a non-proprietary format based on a .dt2 data file extension.


Archive Format

Zip: Typically used for MS-Windows computers. Note: Directory names are stored in the ZIP file. Please ensure your unzip utility expands directory names.




Metadata Format
HTML and Text




Display Options
Projection: Geographic
Datum: WGS84

Output Data Specifications*

Projection: Geographic
Horizontal Datum: WGS84
Vertical Datum: WGS84/EGM96
Zunits: meters




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URL: http://srtm.usgs.gov/data/dataformat.php
Page Contact Information: custserv@usgs.gov
Page Last Modified: March 20, 2012