Online Tool Store
· 4 min read
How to Convert KML Files to GPX
Heshan Fernando
Co-founder & COO
Someone sends you a KML file containing a hiking route and several meeting points, but the GPS app you plan to use expects GPX. Renaming .kml to .gpx does nothing because the two XML formats organize geographic features differently. A converter needs to translate placemarks, lines, coordinates, and names into GPX elements the receiving device understands.
The conversion is usually straightforward for simple routes and waypoints. Styling, folders, overlays, and application-specific KML features may not have a direct GPX equivalent. Preview what the converter detected before relying on the result outdoors.
What KML and GPX store
KML is widely used to describe geographic content for map visualization. It can contain placemarks, paths, polygons, folders, descriptions, colors, icons, and overlays. GPX focuses on GPS exchange data: waypoints, routes, tracks, and associated coordinates or metadata.
A KML Point commonly becomes a GPX waypoint. A LineString may become a route or track depending on the converter option and intended use. Longitude and latitude order in raw KML is another detail worth remembering; user-facing tools should interpret it, but manual edits can easily swap the values.
What can change during conversion
Geographic coordinates usually transfer well, while presentation details do not. A colored KML path may appear with the receiving app’s default track color. Custom icons, rich descriptions, and nested folder structure may be simplified or omitted.
| KML Feature | Likely GPX Result | Usually Preserved | Review |
|---|---|---|---|
| Point placemark | Waypoint | Coordinates and name | Symbol |
| LineString | Route or track | Point sequence | Feature type |
| Folder | Grouping may flatten | Feature names | Organization |
| Style | Often omitted | Sometimes nothing | Color and icon |
| Polygon | No simple direct match | Boundary points vary | App support |
Order matters for tracks. If points are written in the wrong sequence, the GPX viewer draws lines that jump across the map. A visual preview is more useful than only checking that the file opens.
What a good GPX result looks like
The route appears in the correct place
Inspect the start, finish, and at least one known intermediate location. A route appearing in the ocean or another country usually signals reversed or malformed coordinates.
Waypoints and track points are not confused
Waypoints are independent locations. Tracks and routes contain ordered point sequences. Choose the output interpretation expected by the target app or device.
Essential details survive without styling assumptions
Names and coordinates are more portable than KML presentation. If a color, icon, or folder conveys safety-critical information, recreate or document it after import rather than assuming it transferred.
For navigation use, confirm elevation and timestamps separately when the source is expected to contain them.
After conversion, the guide to viewing a GPX route, distance, and elevation gives you a practical verification step. More file conversion utilities are available in the browser tools directory.
Common mistakes to avoid
- Renaming the file extension. KML content does not become GPX without structural conversion.
- Skipping a map preview. A syntactically valid file can still contain an incorrect path.
- Assuming styles will transfer. GPX consumers often choose their own colors and symbols.
- Choosing route versus track blindly. Receiving apps may treat them differently.
- Using an unverified route offline. Confirm the file and carry appropriate navigation backups.
How to do it with KML to GPX Converter
- Keep the original KML and note the expected start, finish, and important placemarks.
- Open the KML to GPX Converter.
- Select the KML file in the local-file workflow.
- Review the detected placemarks and line features in the conversion preview.
- Choose the available route, track, or format options based on the destination app.
- Prepare and download the GPX result using the provided controls.
- Open it in a GPX viewer, verify known locations and point order, then test the target device before the trip.
The workflow stays in your browser and requires no account. That keeps unpublished locations on your device while you prepare the converted file.
Frequently asked questions
Will KML colors and icons appear in GPX?
Not reliably. GPX is centered on exchangeable GPS data, and applications often apply their own visual styling. Check the imported result and recreate essential labels or symbols if needed.
Should a KML path become a GPX route or track?
Use the type expected by your destination. Routes may be interpreted as navigable planned points, while tracks commonly represent a detailed recorded or drawn path. App behavior varies.
Why is my converted route in the wrong location?
Inspect the coordinate order and source data. KML commonly writes longitude before latitude in coordinate tuples, while other contexts display latitude first.
Final thought
A successful KML-to-GPX conversion is measured on the map, not by the download alone. Verify the feature type, route order, and known coordinates, and assume decorative KML styling will need separate attention in the destination app.