Free DEM Data Download & Elevation Models
中国地理空间数据云 (Geospatial Data Cloud)
Quick answer: Use gscloud.cn to download SRTM 90m and ASTER GDEM tiles with China-focused coverage; a Chinese mobile number is required for registration but all data is free.
Next step
Already have the export?
Open a GeoJSON result in the browser to inspect its map and attributes before sharing or converting it again.
Format
GeoTIFF
Geometry
Raster DEM
Coverage
Global with emphasis on China and Asia
Resolution
90 m (SRTM) / 30 m (ASTER GDEM)
About this dataset
Free Chinese geospatial data portal offering SRTM, ASTER GDEM, MODIS, and Landsat data with China-focused coverage and simple registered-user downloads.
中国地理空间数据云 (gscloud.cn) provides free access to SRTM 90m, ASTER GDEM v3, and other global and China-region DEM datasets in GeoTIFF format. Registration with a Chinese mobile number is required, but data is free to download. The portal is hosted by the Chinese Academy of Sciences and is widely used for China-focused terrain analysis.
How to download
- 1 Register an account at gscloud.cn using a Chinese mobile number (中国手机号).
- 2 Log in and navigate to the dataset catalog (数据目录) to browse available DEM products.
- 3 Select SRTM 90m, ASTER GDEM, or another desired elevation dataset and choose your area of interest.
- 4 Click download (下载) to save the GeoTIFF tile to your local machine for GIS processing.
FAQ
Do I need a Chinese phone number to use gscloud.cn?
Yes. Registration requires a Chinese mobile number (中国手机号) for SMS verification. International phone numbers are not currently supported.
What DEM datasets are available on gscloud.cn?
The portal offers SRTM 90m (3 arc-second), ASTER GDEM v3 (30 m), and other elevation products with a focus on China and Asia coverage.
Is the data on gscloud.cn free?
Yes. All datasets are free to download after registration; there are no per-tile or per-dataset fees.