Add Elevation Data to GPX Files
Automatically enrich your GPX files with accurate elevation data from New Zealand's LINZ LiDAR dataset. Perfect for hiking tracks, running routes, and cycling paths.
Ready to Enrich Your GPX File?
Upload your GPX file and get it back with complete elevation data in seconds.
Upload GPX File →Why Add Elevation to GPX Files?
Many GPS devices and mobile apps create GPX files without accurate elevation data, or the elevation data they include can be unreliable due to GPS signal limitations. Adding high-quality elevation data improves:
- Route Planning: Accurately calculate elevation gain and loss
- Fitness Tracking: Get precise calorie burn estimates based on terrain
- Visualization: Create better elevation profiles and 3D route views
- Analysis: Identify steep sections and grade percentages
How It Works
NZ Elevation Tools uses LINZ LiDAR data to add or replace elevation values in your GPX file:
- Upload: Drop your GPX file into the tool
- Processing: Each track point is matched with precise LiDAR elevation data
- Download: Get your enhanced GPX file with complete elevation information
Process Your GPX File Now
Fast, accurate, and automatic elevation enrichment for your GPS tracks.
Get Started →Supported File Formats
While this guide focuses on GPX files, NZ Elevation Tools also supports:
- GPX - GPS Exchange Format (waypoints and tracks)
- KML - Keyhole Markup Language (Google Earth)
- GeoJSON - Geographic JSON format
- CSV - Comma-separated values with lat/lon columns
Use Cases
Hiking and Tramping
Add elevation data to tracks from DOC (Department of Conservation) walks, Great Walks, or your own custom hiking routes. Understand the true difficulty of trails by seeing accurate elevation gain.
Mountain Biking
Enrich your mountain bike trails with elevation data to analyze climbs, descents, and technical sections. Perfect for planning rides or sharing routes with friends.
Running and Trail Running
Get accurate elevation profiles for your running routes. Essential for training analysis and understanding the true effort of your workouts.
GPS Track Correction
If your GPS device recorded poor elevation data due to satellite issues or atmospheric conditions, replace it with accurate LiDAR-based elevation values.
Data Quality
The elevation data comes from LINZ LiDAR surveys with typical vertical accuracy of ±0.5 to 1 meter. This is significantly more accurate than barometric altitude from most GPS devices or smartphone apps.
Privacy and Security
Your GPX files are processed securely and are not stored on our servers. Files are processed in real-time and immediately discarded after the enriched version is returned to you.
More Elevation Tools
Explore our complete suite of elevation tools for New Zealand.