Magellan waypoint file
File type: GIS, GPS navigation and map file
A .mglw file is a waypoint file downloaded from a Magellan GPS receiver.
The file is associated with GeoVisu, a Microsoft Windows application for viewing and working with GPS and map data.
File type category:
GIS, GPS navigation and map file
Date updated: September 28, 2026
The MGLW file extension identifies waypoint data downloaded from Magellan GPS receivers. A file stores saved locations used by the receiver, such as points recorded or marked during navigation.
GeoVisu uses MGLW files as part of its GPS data workflow on Microsoft Windows.
Open the .mglw file in GeoVisu on Microsoft Windows. If the file does not open directly, use GeoVisu's GPS or file-import commands to load the waypoint data.
Conversion is normally handled by importing the waypoint file into GeoVisu and exporting the data in a format supported by that application. The available export formats depend on the GeoVisu version.
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