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GEBCO gridded bathymetry data

GEBCO_2019 Grid

GEBCO’s gridded bathymetric data sets are global terrain models for ocean and land. They are maintained and distributed by BODC on behalf of GEBCO.

The GEBCO_2019 Grid is GEBCO's latest global terrain model at 15 arc-second intervals. The Grid is available to download:

  • as a global file in netCDF format
  • for user-defined areas in: netCDF, Esri ASCII raster or GeoTiff formats

Download the global grid files

Select data for a user-defined area

Select your grid and the area of interest from the map and tables below. Add your selection to the basket and repeat the process as required. Once you are happy with your selection(s) view the basket and checkout your request to start file preparation. Please note that the map display layers are based on the previous GEBCO grid, GEBCO_2014. It is intended to update these layers in the near future.


Define your search box coordinates - input order is most westerly, southerly, easterly, northerly. Alternatively use keyboard Shift+mouse Left Click and Drag a box to define your area of interest on the above map
Coordinates should be decimal degrees (maximum - 5 decimal places) where West and South are entered as negatives and East and North as positives. For example 20 W, 5 S, 10 W, 2 N = -20.0,-5.0,-10.0,2.0

*maximum area allowed is 10800 grid cells by 10800 grid cells, this is equal to an area of 45 degrees by 45 degrees

GEBCO_2019 Grid

Available data options Available formats Select
User-defined area* 2D netCDF
User-defined area* INT16 GeoTIFF (data)
User-defined area* ESRI ASCII

GEBCO_2019 Source Identifier Grid

Available data options Available formats Select
User-defined area* 2D netCDF
User-defined area* INT16 GeoTIFF (data)
User-defined area* ESRI ASCII

Depending on the size of your area selection, or during busy periods, data preparation may take a while.

Dataset errata

Although every care is taken during the development of the GEBCO bathymetric grids, errors are occasionally reported. Reported issues can be viewed on the errata pages on GEBCO's web site.

General Bathymetric Chart of the Oceans (GEBCO)      International Hydrographic Organization (IHO)      Intergovernmental Oceanographic Commission (IOC)