Elevation & Ocean Depth Lookup • Altitude
Free global elevation and ocean depth lookup. Explore Earth's hypsographic curve, convert meters to feet, calculate high-altitude boiling point.
| Fathoms Equivalent: | 4,839 fathoms |
| Datum Standard: | Mean Sea Level (EGM2008 Geoid) |
Atmospheric & Physiological Metrics
| Standard Barometric Pressure: | 314.2 hPa (9.28 inHg) |
| Effective Oxygen Availability: | 31.0% of sea-level value |
| Water Boiling Point: | 70.8°C (159.4°F) |
| Aviation Flight Level / Layer: | High Altitude Hypoxia Zone (FL 290) |
Earth's Hypsographic Extremes Directory
| Feature Name | Category | Location | Elevation / Depth | Notable Fact |
|---|---|---|---|---|
| Mount Everest | Highest Mountain | Nepal / Tibet | +8,848.86 m (+29,032 ft) | Summit reaches cruising altitude of commercial jetliners |
| K2 (Mount Godwin-Austen) | Second-Highest Mountain | Pakistan / China | +8,611 m (+28,251 ft) | Savage Mountain with steep climbing routes and technical terrain |
| Dead Sea Shore | Lowest Dry Land | Jordan / Israel | -430.5 m (-1,412 ft) | Hyper-saline lake with surface pressure higher than standard sea level |
| Lake Assal | Crater Lake Depression | Djibouti | -155 m (-509 ft) | Lowest point on the African continent in the Afar Depression |
| Badwater Basin (Death Valley) | Salt Flat Depression | California, USA | -86 m (-282 ft) | Lowest point in North America; 85 miles from Mt. Whitney |
| Challenger Deep | Deepest Ocean Trench | Mariana Trench, Pacific | -10,994 m (-36,070 ft) | Hydrostatic pressure exceeds 1,086 atmospheres |
| Tonga Trench (Horizon Deep) | Deep Ocean Trench | South Pacific | -10,820 m (-35,500 ft) | Second-deepest trench in the world, formed by Pacific subduction |
Ocean Pelagic Depth Stratification
| Zone Name | Depth Range | Light Conditions | Typical Marine Life |
|---|---|---|---|
| Epipelagic (Sunlight) | 0 – 200 m | Full sunlight for photosynthesis | Phytoplankton, tuna, coral reefs, sea turtles, dolphins |
| Mesopelagic (Twilight) | 200 – 1,000 m | Faint filtered blue light | Lanternfish, hatchetfish, giant squid, zooplankton migrators |
| Bathypelagic (Midnight) | 1,000 – 4,000 m | Complete solar darkness; bioluminescence | Anglerfish, gulper eels, vampire squid, dumbo octopuses |
| Abyssopelagic (Abyssal) | 4,000 – 6,000 m | Zero light; near-freezing (1–4°C) | Sea cucumbers, tripod fish, deep-sea hydrothermal vent worms |
| Hadopelagic (Hadal Trenches) | 6,000 – 11,000 m | Extreme crushing pressure (> 1,000 atm) | Mariana snailfish, amphipods, specialized piezophilic microbes |
About this tool
How to use it
- Select an elevation preset (e.g. Mount Everest, Challenger Deep, Dead Sea, Denver, or La Paz) or enter custom GPS coordinates or a height/depth in meters.
- Toggle between Altitude (above sea level) and Bathymetry (ocean depth below sea level).
- Inspect the converted measurements across meters, feet, fathoms, kilometers, and miles.
- Review atmospheric pressure (hPa), effective oxygen availability, and water boiling point for high-altitude terrestrial coordinates.
- Examine oceanic hydrostatic pressure (atm / PSI) and marine ecological zones (Epipelagic, Mesopelagic, Bathypelagic, Abyssopelagic, Hadopelagic) for marine bathymetry coordinates.
Why it matters
Understanding elevation and ocean depth is vital for mountaineering acclimation, drone flight ceilings, aviation altimeter calibration, marine science, and cartography. High altitudes affect barometric pressure, boiling temperature, and oxygen saturation, while deep waters create extreme hydrostatic pressures that crush unreinforced submersibles.
When to use it
Use this tool when planning high-altitude hikes or travel to cities like La Paz or Denver, researching marine biology and ocean trenches, calculating boiling temperatures at altitude, or inspecting planetary topographical extremes.
Common questions
What is the highest point and deepest point on Earth?
The highest terrestrial point is the summit of Mount Everest at 8,848.86 m (29,031.7 ft) above sea level. The deepest point is Challenger Deep in the Mariana Trench at approximately 10,994 m (36,070 ft) below sea level.
What is the lowest dry land on Earth?
The shores of the Dead Sea in Israel/Jordan are the lowest exposed dry land on Earth at approximately 430 m (1,411 ft) below mean sea level.
What are the five primary oceanic depth zones?
They are the Epipelagic (sunlight zone, 0–200 m), Mesopelagic (twilight zone, 200–1,000 m), Bathypelagic (midnight zone, 1,000–4,000 m), Abyssopelagic (abyssal zone, 4,000–6,000 m), and Hadopelagic (trenches / hadal zone, 6,000–11,000 m).
Why does water boil at lower temperatures at higher elevations?
As altitude increases, atmospheric pressure decreases. Because boiling occurs when a liquid's vapor pressure equals surrounding atmospheric pressure, water boils at only 84°C (183°F) in Denver or 71°C (160°F) at the Everest summit.
How high does hydrostatic pressure reach in Challenger Deep?
At 10,994 meters below sea level, hydrostatic pressure exceeds 1,086 atmospheres (over 15,900 pounds per square inch or 1.1 metric tons per square centimeter).