Reference tool
Elevation finder
Copernicus GLO-90 elevation via Open-Meteo, plus ISA pressure.
Short answer
- Pressure at 1 mile
- 834hPa
- Oxygen at 1 mile
- 82.3%
Pressure and oxygen by height
| Elevation | ISA pressure | Oxygen vs sea level |
|---|---|---|
| 0 m · 0 ft | 1,013 hPa | 100.0% |
| 1,609 m · 5,280 ft | 834 hPa | 82.3% |
| 3,000 m · 9,843 ft | 701 hPa | 69.2% |
| 4,000 m · 13,123 ft | 616 hPa | 60.8% |
| 5,000 m · 16,404 ft | 540 hPa | 53.3% |
| 8,849 m · 29,032 ft | 314 hPa | 31.0% |
How to use it
- Click the map, search a place, or tap Use GPS.
- A marker drops and the tool asks Open-Meteo for the elevation.
- Read the result line: elevation in meters and feet, the standard atmosphere pressure in hectopascals, and the oxygen level as a share of sea level.
- Click another point to compare. If the service does not answer, a notice explains why.
Where the elevation comes from
Open-Meteo's elevation API serves the Copernicus DEM 2021 release GLO-90, a global elevation model at 90 meter resolution built from satellite radar. The tool sends your coordinates and shows the value returned for that grid cell.
A 90 meter cell averages the ground inside it. On a steep slope or a sharp summit the value can differ from a surveyed spot height by tens of meters. The model describes the surface seen from space, which in forests and cities can include some of the canopy or buildings.
Pressure and oxygen
Air pressure falls with height. The tool uses the International Standard Atmosphere formula for the lower atmosphere: p = 1013.25 × (1 − 2.25577 × 10⁻⁵ × h)^5.25588 hPa, with h in meters. The share of oxygen in air stays about the same with height, so the oxygen available per breath falls in step with pressure.
These are standard-day values. A low-pressure weather system lowers the real figure by a few percent, and a high raises it.
Related elevation tools
On a phone, tap Use GPS to read the ground height where you stand. For the rise and fall along a path, the elevation profile samples 80 points between your clicks and totals the climb.
Common uses
Hikers check the height of a trailhead or summit before a trip. Bakers and cooks at altitude look up their elevation to adjust recipes. Homeowners check how high a lot sits above a nearby river. For flood questions, use official flood maps as well: a 90 meter grid cannot resolve the few meters that separate a dry lot from a wet one.
Questions people ask
Is this the same as GPS altitude?
No. GPS altitude is measured by your device and is often off by tens of meters. This is ground height from an elevation model.
How precise is the elevation?
It is the value for a 90 meter grid cell, so steep terrain is averaged.
What does the oxygen figure mean?
The oxygen partial pressure at that height as a share of sea level, on a standard day.
Sources and data as of
Data as of: Copernicus DEM GLO-90 via Open-Meteo at the time of each lookup.
- 01Open-Meteo elevation API (Copernicus DEM GLO-90, 90 m) (last verified 2026-09-30)
How every number is computed: methodology. Spotted a wrong figure? Report an error.