Add Elevation Data to KML Files

Why Add Elevation to KML Files?

KML (Keyhole Markup Language) is widely used for geographic visualization in Google Earth and other mapping platforms. Adding accurate elevation data enhances your KML files by:

• 3D Visualization: Create realistic 3D views in Google Earth with accurate terrain following
• Terrain Analysis: Analyze elevation changes along paths and boundaries
• Professional Mapping: Produce high-quality maps with elevation profiles
• Data Completeness: Fill in missing altitude values or replace inaccurate GPS data

Perfect for Google Earth Projects

Google Earth displays KML files with elevation data in true 3D, following the terrain surface. This is essential for:

• Hiking and tramping trail visualization
• Property boundary surveys
• Environmental monitoring projects
• Tourism and educational content
• Infrastructure planning and development

How It Works

1. Upload: Drag and drop your KML file into the tool
2. Processing: Every coordinate in your KML is matched with precise LiDAR elevation data
3. Enhancement: Altitude values are added or updated throughout the file
4. Download: Get your enhanced KML file ready for use

KML Feature Support

NZ Elevation Tools adds elevation data to all coordinate types in KML files:

• Placemarks: Individual points with coordinates
• LineStrings: Paths, routes, and linear features
• Polygons: Boundaries and area features
• MultiGeometry: Complex features with multiple parts

Use Cases

Hiking Trail Mapping

Create stunning Google Earth visualizations of New Zealand's hiking trails. Add elevation data to trails like the Tongariro Alpine Crossing, Milford Track, or local walking paths to show the true 3D terrain profile.

Property and Land Surveys

Enhance property boundary KML files with accurate elevation data for resource consent applications, subdivision planning, or land development projects.

Conservation and Environmental Projects

Document restoration areas, monitoring sites, or ecological zones with elevation-aware KML files that accurately represent the terrain.

Tourism and Education

Create immersive Google Earth tours of New Zealand's landscapes, showing visitors the real topography of destinations before they visit.

Data Quality

All elevation data comes from LINZ LiDAR surveys with typical vertical accuracy of ±0.5 to 1 meter. This is professional-grade data used by surveyors, councils, and government agencies across New Zealand.

Converting Other Formats to KML

If you have data in other formats, we support elevation enrichment for:

• GPX files (GPS tracks)
• GeoJSON files (web mapping)
• CSV files (spreadsheet data)

Tips for Best Results

• Ensure your KML coordinates are in WGS84 (latitude/longitude) format
• Keep file sizes reasonable - very large KML files may take longer to process
• The tool works best for locations within New Zealand
• View the result in Google Earth with terrain enabled for full 3D effect