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I have downloaded Bathymetry data from GEBCO. Its in NetCDF format. I want to create contour from it. I tried so many tools to convert the file into raster but couldn't do so. How can I create raster from netCDF?

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Have you tried this? If so, I recommend that you include your results as part of your question so we know at least some of what you have tried. –  PolyGeo Feb 10 '13 at 11:45
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NetCDF is a standard raster format, so I don't understand what you mean with creating a raster of it. It would help if you could clarify what you tried and what you could not achieve. –  bhell Feb 10 '13 at 12:16

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If you have access to the 3D Analyst extension, instead of downloading NetCDF grids, you could download ASCII grids (GEBCO offers both options). You can use the ASCII 3D to Feature Class tool to create a feature layer, and then use the Spline or Krigging tools to create your bathymetric rasters.

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Could you please provide me the link of ASCII grids of GEBCO? –  Devils Dream Feb 11 '13 at 6:40
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To get the ASCII grids, you have to download a downloader application. And actually there's an option right in the software to create ArcGIS compatible rasters. –  L_Holcombe Feb 11 '13 at 7:19
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Link: gebco.net/data_and_products/grid_display_software Warning - the link on that page goes to a British government site, which may trigger a warning about invalid security certificates. I clicked through, and nothing bad happened to me, but I can't make any guarantee that the external site is safe. –  L_Holcombe Feb 11 '13 at 7:25
    
ArcGIS can read NetCDF directly as raster data, so there is no need to modify the dataset by interpolation, kriging etc.: help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/… –  bhell Feb 11 '13 at 14:25

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