Kostenloser Atmospheric Druck at Altitude Rechner
Berechnen Sie atmospheric pressure at any altitude unter Verwendung von the barometric formula. kostenloser Rechner for any planet.
Pressure at Altitude
56,266.42 Pa
Pressure at Altitude vs Surface Pressure (P0)
Formel
## Barometric Pressure at Altitude For an isothermal atmosphere the pressure decreases exponentially with height. ### Formula **P(h) = P0 * exp(-h / H)** - *P0* = surface pressure - *h* = altitude above the surface - *H* = scale height (about 8.5 km for Earth) Every scale height of ascent reduces the pressure by a factor of e (about 2.718).
Lösungsbeispiel
Earth at 5 000 m altitude (P0 = 101 325 Pa, H = 8 500 m).
- 01P = P0 * exp(-h/H)
- 02P = 101325 * exp(-5000/8500)
- 03exp(-0.5882) = 0.5556
- 04P = 101325 * 0.5556 = 56 300 Pa = 0.556 atm
Häufig Gestellte Fragen
Does this work for Mars?
Yes, but with Martian values: P0 is approximately 636 Pa and H is approximately 11 100 m.
Why is the atmosphere assumed isothermal?
The exponential formula is exact for constant temperature. For real atmospheres with lapse rates, it is a good first approximation over limited altitude ranges.
At what altitude is pressure half of sea level?
Solving exp(-h/H) = 0.5 gives h = H * ln(2), approximately 5 900 m on Earth.