Convert KML Superoverlay to ASCII Grid

Convert KML Superoverlay (.kml) to ASCII Grid (.asc) online for free. Fast, accurate geospatial format conversion with CRS reprojection.

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Upload your KML Superoverlay file and get ASCII Grid output in seconds.

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About KML Superoverlay

KML Superoverlay is a KML-based format for tiled raster imagery that enables efficient loading of large images in Google Earth through level-of-detail management.

Extensions: .kml

Software: Google Earth, QGIS, GDAL, MapTiler, Global Mapper

Limitations: Requires WGS 84. Creates many tile files. Primarily for visualization, not analysis.

About ASCII Grid

Arc/Info ASCII Grid is a simple text-based raster format. Each cell value is stored as a number in a plain text file with a header describing the grid dimensions and position.

Extensions: .asc

Software: ArcGIS, QGIS, GRASS GIS, GDAL, SAGA GIS

Limitations: Very large file sizes (plain text). Single band only. No built-in compression. Slow to read for large grids.

How to Convert KML Superoverlay to ASCII Grid

Upload your KML Superoverlay file (.kml)
Review detected layers, features, and coordinate system
Select ASCII Grid as your output format
Choose a target coordinate reference system (optional)
Click Convert and download your ASCII Grid file

Frequently Asked Questions

How do I convert KML Superoverlay to ASCII Grid?

Upload your KML Superoverlay file to ConvertGeoData, review the detected data, select ASCII Grid as the output format, and click Convert. Your converted file will be ready to download in seconds.

Is the KML Superoverlay to ASCII Grid conversion free?

Yes! ConvertGeoData offers free conversions for all users. No account required for basic conversions. Sign up for a Pro or Business plan for higher limits.

Can I change the coordinate system during conversion?

Yes. ConvertGeoData automatically detects your source CRS and lets you reproject to any EPSG coordinate reference system during conversion.

What software can open ASCII Grid files?

ASCII Grid files can be opened with ArcGIS, QGIS, GRASS GIS, GDAL and more.