What Is My Elevation?
Instantly find your current altitude and ground elevation above sea level using device GPS and verified digital elevation terrain models.
What Is My Elevation uses your device location or search input to measure your precise ground height above mean sea level. Results are displayed in feet and meters, combining device GPS sensor altitude with verified digital elevation model (DEM) topographic ground data.
My Elevation Technical Specifications & Standards
EGM96 Geoid / WGS84 Datum
Standard global ellipsoidal coordinate reference system
Copernicus Geodesics
Sub-meter vertical resolution across landmasses
GeoJSON · KML · CSV · SVG
Compatible with QGIS, ArcGIS, Google Earth & CAD
100% Client-Side
Calculations run in-browser. Zero coordinate logging.
How to Use the What Is My Elevation?
Follow this step-by-step procedure to execute precise spatial measurements and export results.
- 1Click "Check elevation at my location": Allow device location access to sample your current elevation.
- 2Inspect height above sea level: Read your elevation displayed prominently in both feet and meters.
- 3Compare topographic models: Review high-resolution Copernicus 30m and SRTM 90m satellite elevation data.
- 4Explore terrain map: Click anywhere on the surrounding map to inspect terrain elevation profiles.
Geodesic Precision vs. Competitor Mapping Approaches
Most legacy mapping utilities (such as CalcMaps and FreeMapTools) rely on planar Web Mercator projections or spherical approximations, causing significant mathematical distortion at higher latitudes. GeoMap Suite computes exact ellipsoidal geodesics on the WGS84 reference ellipsoid.
| Calculation Model | Mathematical Basis | Distortion on WGS84 | Standard Tools | Practical Application |
|---|---|---|---|---|
| Planar (Web Mercator) | Cartesian dx² + dy² | 10% to 200%+ error | CalcMaps / Simple map tools | Distorts drastically away from equator. Inaccurate for true distance. |
| Spherical Great-Circle | Haversine (R = 6,371 km) | Up to 0.5% (~5 km/1,000 km) | Basic Google Maps wrappers | Ignores Earth's polar flattening. Reasonable for rough estimates. |
| GeoMap Suite Ellipsoidal | Karney Direct/Inverse WGS84 | < 15 nanometers (<0.0001%) | GeoMap Suite | Geodetic surveying, maritime, flight paths & legal boundary analysis. |
Worked Example: Elevation Check at Denver Union Station
A visitor in Denver, Colorado verifies their height in the Mile High City.
Input Parameters
- Coordinates
- 39.7531° N, 105.0002° W (Denver, CO)
Computed Outputs
- Elevation (Feet)
- 5,184 ft
- Elevation (Meters)
- 1,580 m
- Terrain Classification
- High Plains / Foothills
Step-by-Step Mathematical Process
- Query Copernicus 30m Digital Elevation Model grid cell.
- Evaluate orthometric height above EGM96 / WGS84 geoid.
- Resulting Elevation: 1,580 meters (5,184 feet above sea level).
Understanding Your Results & Practical Interpretation
GPS Altitude vs. DEM Ground Elevation
Device GPS measures ellipsoidal height relative to the WGS84 mathematical ellipsoid, which can vary from mean sea level by up to 100 meters. Digital Elevation Models (DEM) give true orthometric height above sea level.
Practical Applications & Real-World Use Cases
Altitude Acclimatization
Monitor elevation gain to prevent altitude sickness while hiking in the mountains.
Baking and Culinary Cooking
Adjust boiling points and yeast rising times for high-altitude recipes.
Mathematical Methodology & Geodetic Accuracy
Copernicus GLO-30 & NASA SRTM Digital Elevation Sampling
Bilinear interpolation of 30-meter European Space Agency (ESA) Copernicus and 90-meter NASA SRTM radar topographic data.
H_orthometric = H_ellipsoid - N_geoidLimitations & Boundary Conditions
- •Measures bare-earth ground elevation; does not include height of multi-story buildings or towers.
Authoritative Reference Standards
Troubleshooting & Geographic Edge Cases
Why does my smartphone altitude differ from this tool?
Smartphone GPS chips measure raw satellite ellipsoidal height with high vertical uncertainty (often ±10 to 25 meters). GeoMap Suite cross-references your exact horizontal coordinates against high-precision European Space Agency (ESA) Copernicus 30m and NASA SRTM digital elevation models.
Why does the tool show elevation for the ground rather than my apartment floor?
Digital Elevation Models (DEM) record bare-earth topographic surface elevation relative to mean sea level. They do not account for the height of multi-story buildings, bridges, or towers.
Frequently Asked Questions
Click the "Check elevation at my location" button above. Your browser will read your device GPS coordinates and instantly retrieve your exact ground elevation in both feet and meters.