While QGIS can read some DWG files, it prefers DXF. Open your DWG in a free viewer like DWG TrueView (Autodesk) and save it as a DXF.
In Google Earth Pro, right-click your imported layer > Properties (or "Get Info"). Go to the Altitude tab. Change the drop-down from "Clamped to ground" to "Relative to ground." This keeps your CAD lines flat but pressed against the terrain surface. For 3D buildings, use "Absolute" and set a base height. Common Pitfalls & Solutions | Problem | Likely Cause | Fix | | :--- | :--- | :--- | | Nothing appears | Your CAD objects are in Paper Space, not Model Space. | Move everything to Model Space (use CHSPACE command). | | It lands in the ocean | No geographic coordinate data. | Manually reposition in Google Earth (Right-click > Properties > Move/Resize). | | Lines are invisible | White lines on white snow/clouds. | Change your CAD line color to a dark, solid color (e.g., RGB 0,0,255 blue) before exporting. | | Huge file size | Too many hatch patterns or complex blocks. | Explode complex blocks and remove hatches. Use simple polylines. | Final Verdict If you are a professional, use Method 1 (AutoCAD Geolocation + KMLOUTPUT) . It takes 30 seconds and maintains perfect spatial accuracy. how to import autocad to google earth
Still in the Geolocation tab, use "Mark Position" to place a pin. This helps you verify alignment later. While QGIS can read some DWG files, it prefers DXF