Free GPX to KML & KML to GPX Converter Online
A Practical Tool for GPS Data Conversion
In digital mapping and outdoor navigation, geodata is rarely captured and consumed in the exact same format. You might record a track on a dedicated GPS watch, only to realize that you cannot import that specific file into Google Earth for visualization. Conversely, you might draw a custom route in a GIS (Geographic Information System) application and find that your mobile cycling app refuses to recognize the file structure.
This converter handles common GPX tracks, routes and waypoints and converts them into corresponding KML geographic structures directly in the browser. Whether you need to convert a GPX file into a KML file for mapping software, or transform a KML export back into a standard GPX document for a handheld navigator, this bidirectional tool provides a straightforward solution.
Converting Between GPX and KML
The GPX (GPS Exchange Format) is a common standard for recording geographic data. Many fitness trackers, smartwatches, and handheld GPS receivers natively export data as a GPX file. It is an XML document designed to log coordinate points and elevation metrics.
KML (Keyhole Markup Language) is widely used for rendering maps and is the standard for visualizing geographic data in software like Google Earth. By converting your GPX tracks to KML, you can easily import routes into various GIS platforms and map viewers.
Conversely, while KML is excellent for rendering maps on a screen, it is often incompatible with field navigation hardware. Converting a KML file back into the GPX format reorganizes the coordinate data into standard tracks and waypoints that GPS hardware typically requires.
Understanding GPS Formats: What is Preserved?
To get the most out of your mapping software, it is useful to understand that GPX and KML treat geographic data differently.
- GPX (GPS Exchange Format): Built for data exchange, GPX categorizes information into distinct elements: Waypoints (individual locations), Routes (a planned path), and Tracks (a trail of where you actually traveled, often divided into multiple Track Segments).
- KML (Keyhole Markup Language): Built for visual presentation, KML treats everything as a geometric shape on a map. A waypoint becomes a Point. A continuous track or route becomes a LineString.
Our conversion engine is designed to extract core geographic paths, waypoints, and elevations. When converting GPX to KML, it maps Waypoints to Points, and preserves multiple Track Segments (`<trkseg>`) inside KML MultiGeometries. When converting KML to GPX, it maps LineStrings back into standard GPX Tracks (`<trk>`).
KML and GPX have different data models. This converter focuses on Points and LineStrings and does not convert KML styles, custom icons, polygons, overlays, ExtendedData, or other KML-specific structures. GPX extensions, standard timestamps, heart rate, and cadence metadata are also intentionally not processed by this utility.
Local Processing for GPS Data Privacy
GPS files can contain sensitive location information, so keeping conversion inside the browser reduces unnecessary exposure of that data. Many online file converters process files on remote servers.
Utilizing native HTML5 features, the parsing and conversion process runs locally in your browser. Your GPS files are processed locally and are not uploaded by this converter. The converter uses no third-party JavaScript conversion library, relying exclusively on browser APIs for parsing and blob generation.
Frequently Asked Questions
Are my GPS files uploaded to a server?
No. GPS files can contain sensitive location information, so keeping conversion inside the browser reduces unnecessary exposure of that data. Your coordinates are processed locally and are not uploaded by this tool.
How does the auto-detection work?
When you drop a file into the workspace, the tool instantly reads the XML structure regardless of the file extension. If it detects GPX tags, it prepares to convert to KML. If it detects KML elements, it switches to GPX mode. It also analyzes the file to show you exactly how many tracks and waypoints exist before converting.
What data is preserved during conversion?
The converter preserves core geographic information such as points, line paths, names, descriptions, coordinates, and elevations where available. GPX routes and tracks can both become KML LineStrings. When converting KML back to GPX, LineStrings are exported as GPX tracks because KML does not inherently distinguish a GPX route from a GPX track.
Do I need to install any software?
No. This tool requires zero installation and the converter uses no third-party JavaScript conversion library. It runs entirely on native HTML5 APIs built directly into your web browser.
Why did my conversion fail?
Conversion may fail or produce limited output if the file contains invalid XML, unsupported structures, or geographic elements that cannot be represented by this converter. This tool focuses on standard GPX tracks, routes and waypoints and KML Points and LineStrings.