How to Find the Elevation of an Address or Location (Above Sea Level)
A complete guide to finding the exact elevation above sea level for any home address or coordinate point using USGS LiDAR, Copernicus 30m DEMs, and GPS sensors.
To find the exact elevation of an address or location above sea level, you can query high-resolution Digital Elevation Models (DEMs) derived from airborne LiDAR and satellite radar. In the United States, the USGS 3D Elevation Program (3DEP) provides 1-meter to 10-meter bare-earth models. Using the free GeoMap Suite Elevation Finder or "What is My Elevation" tool, you can search any street address, click anywhere on the topographic map, or use your device GPS to get instant elevation in both feet and meters.
What is My Elevation Tool
Get your instant GPS elevation and look up the altitude above sea level for any address in feet and meters.
3 Reliable Ways to Find the Elevation of Any Location
Whether you are checking a property for flood risk, setting up an amateur radio antenna, planning a cycling route, or calibrating a home weather station, there are three primary methods to determine elevation above sea level:
Understanding Vertical Datums: Orthometric vs. Ellipsoidal Height
When people ask for their "elevation above sea level", geodesists must distinguish between two different height measurements:
In North America, geoid height (N) varies between -20 meters to -40 meters. If a software tool does not convert raw GPS ellipsoidal height to orthometric height using a geoid model (like GEOID18 or EGM96), your reported elevation can be off by more than 100 feet!
GeoMap Suite automatically applies geoid undulation corrections to convert raw GPS satellite heights into true orthometric elevation above Mean Sea Level (NAVD88 / EGM96).
Digital Elevation Models: USGS 3DEP, SRTM, and Copernicus DEM
Modern elevation lookups rely on gridded raster elevation datasets known as Digital Elevation Models (DEMs):
Why Smartphone Sensors Diverge From True Topographic Elevation
When you stand on your front porch and compare your iPhone or Android altitude reading with an official USGS survey marker, you will often notice a discrepancy of 15 to 50 feet. Why does this happen?
Elevation Dataset Resolution & Vertical Accuracy Comparison
Here is how major elevation data sources compare in terms of spatial resolution, vertical accuracy, and ideal use cases:
Elevation Data Source Accuracy Matrix
Verified empirical measurements & benchmark coordinates
| Data Source | Spatial Resolution | Vertical Accuracy | Coverage | Primary Technology |
|---|---|---|---|---|
| USGS 3DEP LiDAR (1m) | 1 meter (3.28 ft) | ±5 to 15 cm (0.2–0.5 ft) | Contiguous US | Airborne LiDAR Scanning |
| USGS 3DEP (10m) | 10 meters (1/3 arc-sec) | ±0.5 to 1.5 meters | United States & Territories | LiDAR & Photogrammetry |
| Copernicus DEM (GLO-30) | 30 meters (1 arc-sec) | ±2 to 4 meters | Global (Pole to Pole) | Spaceborne Radar Interferometry |
| NASA SRTM (30m) | 30 meters (1 arc-sec) | ±5 to 9 meters | Global (60°N to 56°S) | C-band Radar Interferometry |
| Consumer Smartphone GPS | N/A (Point Sensor) | ±5 to 15 meters (15–50 ft) | Global Satellite Line-of-Sight | L1/L5 GNSS Trilateration |
| Smartphone Barometer | N/A (Pressure Sensor) | ±1 to 3m (when calibrated) | Ambient Air Pressure | Micro-Electro-Mechanical (MEMS) |
Practical Reasons to Know Your Exact Property Elevation
Knowing your precise elevation above sea level is vital across numerous real-world scenarios:
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People Also Ask About How to Find the Elevation of an Address or Location (Above Sea Level)
Essential questions answered with verified geodesic formulas, datum standards, and practical mapping advice.
Google Maps only displays elevation contour lines when viewing the map in "Terrain" mode, and it does not display numerical elevation for specific street addresses. To get the exact numeric elevation in feet or meters for a specific address, you must use a dedicated elevation tool like GeoMap Suite Elevation Finder.
Senior GIS Analyst & Remote Sensing Specialist
Specializing in geodetic algorithms, WGS84 coordinate mathematics, and large-scale spatial mobility studies across North America and Europe.
Principal Cartographer
Reviewed against the calculation method and source limitations documented for each tool. Provider-backed results and real-world conditions can vary.
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