Altitude Air Pressure
Calculator
Results
- Air pressure (hPa)
- 756.256562
- Pressure vs sea level (%)
- 74.636719
Travel results
| Air pressure (hPa) | 756.256562 |
| Pressure vs sea level (%) | 74.636719 |
formula-map diagram
- Air pressure (hPa)
- 756.256562
- Pressure vs sea level (%)
- 74.636719
Travel relationship
Formula
P = 1013.25 × (1 − 2.25577×10⁻⁵ × h)^5.25588= 756.25656212296
Note
This result is a simplified model: it uses the displayed formula and the values you entered, ignoring traffic, weather, winds, stops, terrain, fees and individual variation. Confirm schedules, rates and allowances with the carrier or operator.
More in Travel and navigation
See all →Frequently asked questions
How does the calculator estimate air pressure at altitude?+
It uses the barometric formula, which models how atmospheric pressure decreases roughly exponentially with height above sea level, based on standard atmosphere assumptions for temperature and gravity.
Why does air pressure decrease with altitude?+
Air pressure at any point results from the weight of the air column above it; the higher you go, the less air remains above you, so pressure and air density both decrease with elevation.
Does temperature affect the result?+
Yes, the standard formula assumes typical temperature conditions; actual pressure at a given altitude varies somewhat with real weather and temperature, which is why aviation and meteorology use daily-adjusted values for precision work.
Why does this matter for travelers?+
Lower air pressure at high altitude means less available oxygen, which is why travelers to high-elevation destinations often experience altitude sickness and why aircraft cabins are pressurized to a lower equivalent altitude than actual cruising height.
Is the pressure drop the same for every 1,000 meters?+
No, the rate of decrease is faster at lower altitudes and slower higher up because the relationship is exponential, not linear, meaning the biggest pressure drop happens in roughly the first few kilometers above sea level.