Correct GPS Altitude Errors Using Terrain Data
The GPX Elevation Corrector is a free online tool that cleans up noisy elevation data in your GPX files. It is designed for cyclists, runners and hikers who want realistic elevation profiles, smoother climbs and more accurate ascent statistics.
What this tool does
- Corrects elevation data: Replaces noisy GPS altitude with high‑resolution terrain data.
- Smooths profiles: Applies elevation smoothing to remove spikes and unrealistic jumps.
- Preserves your route: Only elevation values are changed – coordinates and timestamps stay intact.
- Ideal for analysis: Better input for training tools, route planners and performance evaluation.
How it works
- Upload your GPX file with recorded elevation.
- The service corrects and smooths the elevation profile using terrain tiles and a moving average.
- Download the corrected GPX and use it in your preferred app or platform.
Free to use
The GPX Elevation Corrector is offered free of charge. No registration, no subscription – just upload, correct and download.
Open the GPX Elevation Corrector
You can access the tool directly here:
Typical use cases
- Cyclists: Clean elevation for realistic climbing meters and gradients.
- Runners & trail runners: Remove GPS noise from hilly routes.
- Hikers: Get trustworthy ascent/descent values for mountain tours.
Privacy
Your GPX file is processed only for elevation correction. Routes are not shared publicly. You remain in full control of your data.