Guide
GPX and KML: Edit, Convert, and Plan
GPX and KML are the two open XML formats that hold most GPS data: GPX for devices and apps, KML for earth and map viewers. This guide shows how to open and edit either one, convert between them, measure distances, and export the result to a print-ready PDF or a GeoJSON file. Every tool here runs on your device, so files up to 5 MB are read and written in your browser and never uploaded to a server.
GPX or KML: which to use
Pick the format your destination expects. If you are loading a route onto a GPS device or a fitness app, use GPX. If you are sharing a map with placemarks and styling for an earth or map viewer, use KML. When the two do not match, convert: the file converters below move waypoints, routes, and tracks cleanly between the formats. For a deeper look at the data model, read what is GeoJSON, the open standard most mapping and GIS tools read.
Edit, measure, and export
After importing, you can add and move waypoints, draw or adjust routes, and measure each leg with a running total. When the map is ready, export it as an image, a print-ready PDF at a true cartographic scale, or a standard GeoJSON FeatureCollection that opens in common GIS tools.
Frequently asked questions
What are GPX and KML?
Both are open XML formats for geographic data. GPX is the common format for GPS devices and apps, focused on waypoints, routes, and tracks. KML is used mainly by earth and map viewers and carries richer styling and placemarks. Because both are plain text, they convert cleanly between each other.
How do I edit a GPX or KML file online?
Open the map and import your file (up to 5 MB). Drag points, draw or adjust routes, add waypoints, then export a clean GPX or KML file. Everything runs in your browser, so the file is never uploaded to a server.
How do I convert GPX to KML or KML to GPX?
Use the dedicated converter: drop in the file, and it produces the other format to download. Waypoints, routes, and tracks carry across between the two formats.
Can I measure distances and export to PDF?
Yes. Measure a route leg by leg with a running total, then export the map (with your track, grid, and annotations) as an image, a print-ready PDF at real scale, or a GeoJSON file.
Are these tools free?
Yes. Editing, converting, and measuring run in your browser with no login or install; a quick, free sign-in is only needed to export a finished map.
Need to put a reference grid over your route? See the map grid references guide.