Right-click your new path in the "Places" panel and select to save it as a KML file . Add Elevation Data : Go to a tool like GPS Visualizer.

If you need for construction, do not use Google Earth . The elevation data is often low resolution and can be off by several meters.

Additionally, the user must be aware of . Google Earth uses a simple 3D geographic coordinate system (WGS 84). Transferring this data into a projected CAD file without correct transformation can result in significant distortion of distances and areas. Finally, vegetation and buildings appear as part of the terrain surface in Google Earth (the "Digital Surface Model" or DSM), not the bare earth ("Digital Terrain Model" or DTM). Consequently, contours generated from this data may reflect treetops or rooftops, not the actual ground level—a critical distinction for engineering calculations.

Since AutoCAD cannot read Google Earth’s native KMZ or proprietary 3D mesh directly, a procedural workaround is required. This typically unfolds in three distinct stages: data capture, conversion and contour generation, and final import.

Convert the file and download the results as a or CSV containing Easting, Northing, and Elevation. Import to AutoCAD/Civil 3D :

This method involves creating a high-density "path" in Google Earth to capture elevation data points, which are then converted into a format AutoCAD can read. : Find your site and use the Add Path tool .