Convert KMZ to KML online
Convert zipped KML (KMZ) — the compressed Google Earth format that packs KML plus its assets into one file — into Keyhole Markup Language (KML), which is the Google Earth and Google Maps format. Drop your KMZ file below, KML is already selected as the output, and download the result. Everything runs in your browser and the cloud; you never install anything.
Upload your file
Drag and drop it into the converter below. A free account comes with three welcome conversions.
Convert in the cloud
MapGO detects the format and produces your download in seconds.
Download & keep it
Files are deleted automatically after 48 hours.
Files are deleted automatically after 48 hours. Your files are never shared.
Why convert KMZ to KML with MapGO?
Most online converters take one file and hand back one file. MapGO is built on a real geospatial engine, so a single upload can do more.
- Several outputs in one upload
Tick KML and any other formats you need; every selected format is delivered from the same file.
- Files up to 5 GB
Far beyond the browser-based converters that choke past a few hundred megabytes.
- Reproject while you convert
Set a source and target EPSG code and the coordinate system is changed during the conversion, no second tool needed.
- Private by default
Files are deleted automatically after 48 hours.
KMZ vs KML at a glance
| KMZ | KML | |
|---|---|---|
| Typical use | Sharing Google Earth maps as a single compressed file | Google Earth / Google My Maps visualisation and sharing placemarks |
| Size on disk | Small — it is a zip archive of KML plus images | Verbose XML; the zipped KMZ variant shrinks it considerably |
| Attribute support | Same as KML: data lives in ExtendedData | Styling-first — data lives in ExtendedData and is easy to lose |
| Software support | Google Earth/Maps and most GIS tools | Google Earth/Maps and most GIS tools |
| Web-friendliness | Needs conversion for web maps | Good inside the Google ecosystem; niche elsewhere |
Other ways to convert KMZ to KML
You don't need an online tool for this. If you have GDAL installed, one command does it.
In QGIS (free): open your KMZ via Layer → Add Layer, then right-click the layer → Export → Save Features As… and pick KML as the format.
The MapGO converter above is for when you don't want to install anything, need to convert to several formats at once, or are handling files too large for a desktop machine.
ogr2ogr -f "KML" output.kml input.kmzKMZ to KML: frequently asked questions
Is the KMZ to KML converter free?
Partly. Every new account gets three welcome conversions for free, so you can try KMZ to KML without paying. After that, you can either buy a credit pack and pay per conversion, or take a subscription, which gives you unlimited conversions within the plan's file-size limit. There is nothing to install; the whole conversion runs in the cloud.
Is my data kept private?
Conversion is fully automated and your file is never shared. Files are deleted automatically after 48 hours. Download your KML result and it's yours to keep.
What does the KML output contain?
You get a clean Keyhole Markup Language (KML) file with your geometry and attributes preserved, ready to open in the tools that read KML.
Do I need to unzip my KMZ first?
No. Upload the .kmz as it is. MapGO opens the KML document inside (doc.kml) and converts it. Icons and images packed in the KMZ are styling, not data, so they are not carried over.
Will my layer styling show up in Google Earth?
Geometry and attributes convert; symbology does not, because every format stores styling differently. Google Earth applies its default placemark style — restyle inside Google Earth after opening the file.
Can I convert KML back to KMZ?
Yes — use our KML to KMZ converter for the reverse direction. MapGO supports conversions in both directions between these formats.
Also convert
See it on the map first.
Open your KMZ in the workspace, check the shapes and attributes, then convert and download from the same place.