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Easily calculate air pressure at any altitude with our Altitude Pressure Calculator. Get instant, accurate results for aviation, hiking, and weather analysis!
As you go higher, air gets thinner. That’s why mountaintops feel cooler, and planes need pressurized cabins. This drop in pressure follows a predictable pattern. Our Altitude Pressure Calculator helps you find air pressure at any elevation fast and easy!
At sea level, air pressure is about 1013.25 millibars (hPa). But every 1,000 feet up, it drops by roughly 12 hPa. The higher you go, the less oxygen there is. That’s why hikers and pilots rely on altitude pressure calculations.
Here’s a simple formula to estimate pressure at different heights:
P = P₀ × (1 - (L ⋅ h) / (T₀))^(g ⋅ M / (R ⋅ L))
Where:
This formula helps predict air pressure changes with altitude.
Using our calculator is a breeze:
Check out this quick reference table:
| Altitude (ft) | Pressure (hPa) | Pressure (Pa) | % of Sea Level |
|---|---|---|---|
| 0 (Sea Level) | 1013.25 | 101325 | 100% |
| 1,000 | 899.76 | 89976 | 88.8% |
| 5,000 | 540.48 | 54048 | 53.3% |
| 8,000 | 356.00 | 35600 | 35.1% |
| 10,000 | 264.36 | 26436 | 26.1% |
So, if you’re 8,000 feet up, air pressure is just 35.1% of what it is at sea level.
Our Altitude Pressure Calculator makes it easy to find air pressure at any height. Whether you’re a pilot, hiker, or just curious, this tool gives you instant results.
It drops by about 12 hPa or 1.2 kPa every 1,000 feet.
At 8,000 ft, air pressure is about 356 hPa or 35,600 Pa.
Yes! Warmer air expands, so pressure changes slightly based on temperature.
Yes! Pilots use similar formulas to calculate pressure altitude.