How to open a Google Earth KML file on a phone
KML files often arrive by message or email, then fail to open or appear in the wrong place on a phone.
Field takeaways
- KML/KMZ is a visual exchange format for Google Earth and GIS tools.
- KML expects WGS84 longitude, latitude, altitude order.
- Projected metre coordinates should not be written directly into KML.
- MapLab Survey can use KML/KMZ as a field layer for measurement and notes.
- KML imagery is not legal boundary evidence by itself.
Open it as a layer
Opening a KML in a viewer shows you the shape. Importing it as a layer in a field app lets you stand on the boundary and measure against it, which is usually the point.
Start with the filename
Messaging apps rename files and change extensions. If nothing opens, renaming the file to .kml resolves a good share of cases.
Size decides
A KML with tens of thousands of features can freeze a modest phone. Split it by area or simplify it before taking it into the field.
It opens but nothing appears
If the file loads and the screen stays empty, the geometry is probably somewhere else in the world. That is a coordinate problem at the source, not a file problem.
Try these steps on your own phone.
MapLab Survey handles RTK/GNSS point capture, drawing, area and volume calculations and coordinate conversion, then exports to DXF, KML/KMZ, GeoJSON, Shapefile, GeoPackage, NCZ or CSV. Capture, calculation and export work offline. Live NTRIP corrections and online basemaps need a connection.
Frequently asked questions
Why does KML open in the wrong place?
Usually wrong CRS conversion or swapped coordinate order.
Can KML be used as a layer?
Yes, it can be used as a field layer in MapLab Survey.
Is Google Earth imagery legal boundary evidence?
No. It is visual context.
Technical references
The field guidance in this article is aligned with the technical and official references below.
Related: Preparing KML for cadastre · Parcel query layer · Exporting field data to CAD/GIS · MapLab Survey