Atmospheric pressure from altitude Calculator

Calculates the atmospheric pressure at the present location from the altitude and temperature, and sea-level pressure.

Atmospheric pressure from altitude
Sea-level pressure P0
    1. hPa
    1. at present location
Altitude h
    1. m
Temperature T
    1. °C

    1. at present location:
Atmospheric pressure P
    1.  
    2. hPa
=
    1.  
    2. atm
The atmospheric pressure observed is adjusted to the equivalent sea level pressure in order to construct the isobaric weather map.
If the altitude is more than 11km high above sea level, the hypsometric formula cannot be applied because the temperature lapse rate varies considerably with altitude.

Atmospheric pressure from altitude
[1-10] /34Disp-Num
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[1]  2018/08/24 11:13   Male / Under 20 years old / High-school/ University/ Grad student / Very /
Purpose of use
Creating an altimeter system
Comment/Request
Good explaination!
[2]  2018/08/18 05:34   Male / 30 years old level / An engineer / Very /
Purpose of use
Get tue pressure at 2600 masl to prapare a vaccum test on a vessel.
[3]  2018/04/06 16:27   Male / 50 years old level / An engineer / Useful /
Purpose of use
Calculate the air pressure at the bottom of the world’s deepest borehole
[4]  2018/02/21 01:21   Male / Under 20 years old / High-school/ University/ Grad student / Very /
Purpose of use
To calculate the air drag on a potato :)
[5]  2018/01/24 23:07   Male / 20 years old level / An engineer / Very /
Purpose of use
for work.
[6]  2018/01/11 16:24   Male / 40 years old level / Self-employed people / Very /
Purpose of use
Calibrate my Casio watch''s barometer reading & my personal weather station.
Comment/Request
Very useful!
[7]  2017/12/12 09:02   Male / 40 years old level / A teacher / A researcher / Not at All /
Purpose of use
Calibrating a barometer; comparison between weather maps and pressure read from a THOMMEN CLASSIC mechanical high-precision altimeter.
Comment/Request
Done 2017/12/12 in Switzerland at 830m a.s.l. in proximity to a low-pressure system over northern Europe. Sea-level pressure read from weather maps was 996 mbar, the one calculated for 830m a.s.l. was 899mbar, in contrast to 824mbar read from the altimeter. This is too far off, even when local anomalies are taken into account.
[8]  2017/07/20 03:09   Male / 30 years old level / Others / Useful /
Purpose of use
Liquid level sensors prototyping.
[9]  2017/04/05 21:03   Male / 40 years old level / A teacher / A researcher / Very /
Purpose of use
want to make packaging material according to air pressure for packing chips and corn based products.
[10]  2017/03/28 19:18   Male / 30 years old level / An engineer / Very /
Purpose of use
Confirmation of compressed air system selection (air dryers, filters, compressors)
Comment/Request
Great tool

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