File Extension KML

  • Full name
    Google Earth Keyhole Markup Language Format
  • Developer
  • Popularity
Have you encountered a problem with a KML file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a KML file here. In the further part of this page we have added a list of programs that should open your KML file. It is enough you choose a proper application for your operating system, download and install it.


A KML file is a keyhole markup language file and is one of the GIS (Geographic Information System) file formats. KML, like HTML, is a markup language and includes geographic information in vector form, such as points, lines, and polygons, as well as in raster form, such as aerial or satellite images. All data is stored with an XML syntax.

The KML format was originally developed by the satellite image company Keyhole Corp. Developed, but this was taken over in 2004 by Google. KML has been recognized as the standard by the Open Geospatial Consortium and is the file format for Google Earth and Google Maps.

Google Earth processes KML files in much the same way as a browser processes html files. In addition to the file extension KML, the extension kmz is also used for compressed KML files. These are just a ZIP archive that contains the embedded data, such as textures and 3D models as separate files.

Some programs require the King.KML FDO Provider for KML or a special script to import the files. Newer versions often support the format natively.

Programs which can open a KML file

How to open a KML file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the KML file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a KML file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support KML files. At this point we are looking for disk space where the application was installed in and we can link it with a KML file. Since then, our operating system will use the selected program to support all KML files.

Other issues

Despite the described problem with KML there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the KML file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the KML file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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