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Everything you need to know about elevation and how it affects our world
Altitude (or elevation) is the vertical distance of a point above sea level. If you've ever wondered "what is my current altitude?" — it's measured from the mean sea level (MSL), the average height of the ocean's surface. The highest point on Earth is Mount Everest at 8,849 meters (29,032 feet), while the lowest land point is the Dead Sea shore at approximately -430 meters (-1,411 feet).
At higher altitudes, air pressure decreases and oxygen becomes thinner. Knowing your current elevation matters — above 2,500m (8,200ft), you may experience altitude sickness with symptoms like headaches, nausea, and fatigue. Your body needs time to acclimatize. Athletes often train at high altitude to boost red blood cell production, improving their endurance performance at lower elevations.
Temperature drops approximately 6.5°C (11.7°F) for every 1,000 meters of elevation gain — this is called the lapse rate. Air pressure also decreases by about 12% per 1,000m. This is why mountain peaks are cold and snowy even near the equator. Altitude significantly affects cloud formation, precipitation patterns, and wind speeds.
Water boils at lower temperatures at high altitudes — at 2,000m it boils at about 93°C instead of 100°C. This means food takes longer to cook. Baking is especially affected: you may need to adjust leavening, liquid, sugar, and oven temperature. Many recipes include specific "high altitude adjustments" for elevations above 1,000m (3,500ft).
At high altitude, the lower air density reduces drag, making balls travel further — famously observed at Denver's Coors Field (1,580m). FIFA has debated banning matches above 2,500m. Conversely, athletes relocating from high altitude to sea level gain a temporary advantage due to their elevated red blood cell count and enhanced oxygen-carrying capacity.
Aircraft cabins are pressurized to the equivalent of 1,800–2,400m (6,000–8,000ft) altitude. Commercial planes cruise at 9,000–12,000m (30,000–40,000ft) where thinner air reduces drag and fuel consumption. Pilots use different altitude references: QNH (sea level), QFE (airfield level), and flight levels (standard pressure settings).
Explore what life and conditions are like at different elevations
Above 8,000m. Oxygen is insufficient to sustain human life for extended periods. Only 14 peaks reach this height. Supplemental oxygen is almost always required.
No permanent human habitation. Base camps for the world's highest peaks. Severe altitude sickness risk without acclimatization. Oxygen levels at ~50% of sea level.
Cities like La Paz (3,640m) and Lhasa (3,650m) exist here. Altitude sickness common for newcomers. UV radiation is significantly stronger. Agriculture becomes challenging.
Cities like Denver (1,609m), Addis Ababa (2,355m), and Mexico City (2,240m). Most people acclimatize easily. Noticeable effects on athletic performance and cooking.
Most of the world's population lives here. No significant altitude effects on health or daily life. Includes major cities like Paris, London, and Tokyo.
The baseline reference for all elevation measurements. Standard atmospheric pressure is 1013.25 hPa. Coastal cities worldwide sit near this elevation.
The Dead Sea shore is the lowest point on land. Other below-sea-level areas include Death Valley (-86m), Turpan Depression (-154m), and parts of the Netherlands.
Common questions about finding your location, altitude, and elevation
Wondering "where am I right now?" — Altitude Explorer uses your device's GPS to pinpoint your exact location instantly. Whether you need to find where you are, your street address, or your precise coordinates, just allow location access and we'll show you exactly where you are right now on our interactive map.
Finding your current altitude is incredibly simple. When you launch the app, we detect where you are right now, triangulate your geographic position, and cross-reference those coordinates with global topographic databases. This gives you a highly accurate measurement of your height above sea level, displayed in either meters or feet.
Your current elevation is calculated by mapping your longitude and latitude against precise geographic models. Once you know where you are at now, this elevation data is useful for everything from planning a hike, checking the local weather forecast, or adjusting recipes for high-altitude baking.
Whenever you need to figure out where I am right now, our tool runs securely in your browser to request your device location. It determines where you are, finds your current altitude, and communicates with OpenStreetMap and weather APIs to deliver real-time updates about your surroundings, atmospheric pressure, and local geography — all without saving your personal data.