Free GPX, KML and KMZ converters and viewers Convert and open GPS files online, in your browser
Every tool on this page reads the file on your device. Nothing is uploaded unless you ask for the 3D preview, and there is no account and no limit on how often you use them.
Converters
A KMZ converter, a KML converter and a GPX converter, one page per direction, so each can say exactly what is kept and what is dropped.
Viewers
Open a GPX, KML, KMZ or GeoJSON file online and see what it contains before you send it anywhere.
Which format do you need?
GPX
GPX is the plain XML format GPS devices and sports apps trade files in. It holds tracks (what you recorded), routes (what you plan to follow) and waypoints. Every point has latitude and longitude, and can carry elevation and a timestamp. Garmin, Wahoo, Strava, Komoot, AllTrails and OsmAnd all import it.
KML
KML is Google Earth's file format. Besides lines and points it stores how things look: icons, line colours, folders, pop-up descriptions with HTML, even camera positions for a fly-through. Google Earth, Google My Maps, QGIS and ArcGIS read it. Sports apps mostly don't.
KMZ
A KMZ is a KML file zipped up, sometimes together with the icons and images it refers to. Google Earth Pro saves as KMZ by default. Rename one to .zip and you'll find a doc.kml inside. Anything that reads KML usually reads KMZ too, but a text editor can't.
How the tools handle your file
The file is opened with JavaScript running in your browser. Parsing, conversion and the download all happen there, which is why the pages work on a train with no signal once they have loaded.
Two things do go to AvoMap's servers. The coordinates of the first and last point are looked up to print place names next to the outline. And if you click Open 3D preview, the route is sent to the editor so it can be drawn on terrain. Skip that button and the route never leaves your device.
The converters rebuild the file from what they parsed, except KMZ to KML, which unzips and hands you the original. Each page has a table of what survives the trip, because the formats do not hold the same things: GPX has timestamps and no styling, KML has styling and, outside of gx:Track, no timestamps.
Videos Made With AvoMap
Explore the full range of AvoMap features in action with these videos, all created using the easy-to-use editor.
Frequently asked questions
Are the tools really free?
Yes, with no file limit and no account. AvoMap charges for exported videos, and that pays for these pages.
Which converter do I need for a Garmin, Strava or Komoot?
All three read GPX. If your route is a KML or KMZ from Google Earth or Google My Maps, use the KML to GPX or KMZ to GPX converter. Going the other way, GPX to KML and GPX to KMZ make files Google Earth opens.
Can I convert several files at once?
One file per run for now. Drop the next one when the first download has finished.
What about CSV or FIT?
Those are on the list. Until then, QGIS handles CSV, and Garmin Connect exports FIT activities as GPX.