I'm trying to find elevation data for the whole globe for a simple mapping application and I'm not having any luck. I really don't want anything fancy, just something like a 4000x2000 raster of elevation values across the globe would be fine. I plan to colormap and interpolate it myself. Does anyone know where I might find something like this?


You might consider the Shuttle Radar Topography Mission (SRTM) 30 product, which is a coarse resolution near-global 30-arcsecond DEM. You can download the data at the following FTP site:


There is also the GTOPO30 elevation data set that is commonly used for these applications.


The GTOPO30 dataset has been replaced by the Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010), available here, which uses a combination of available elevation data sources (e.g. SRTM, Canadian elevation data, SPOT) to create a multi-source global dataset. Credit goes to Vince for pointing this out.

  • I was hoping for something that was already stitched together into one big raster rather than broken out into tiles if you know of anything like that... – gct Oct 14 '14 at 14:39
  • @gct The SRTM tiles are actually seamless, so mosaicking them is quite simple in any GIS. – WhiteboxDev Oct 14 '14 at 14:51
  • Unfortunately I don't have a GIS available to stitch them together myself =C – gct Oct 14 '14 at 15:03
  • I assume then, that all you're really looking for is an image of a DEM and not the actual elevation dataset. If that's the case, here is the single image SRTM DEM as an image: photojournal.jpl.nasa.gov/jpegMod/PIA03395_modest.jpg – WhiteboxDev Oct 14 '14 at 15:06
  • @gct Also, if you do find you need a GIS, there are plenty of free and open-source GIS available to you like QGIS, SAGA, GRASS, and Whitebox Geospatial Analysis Tools (for which I am a developer). – WhiteboxDev Oct 14 '14 at 15:07

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.