Altitude from atmospheric pressure Calculator

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

Altitude from atmospheric pressure
Sea-level pressure P0
    1. hPa
    1. at present location:
Atmospheric pressure P
    1. hPa
Temperature T
    1. °C

    1. at present location:
Altitude h 
    2. m
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.

    Altitude from atmospheric pressure
    [1-10] /25Disp-Num
    [1]  2019/08/25 02:18   Male / Under 20 years old / High-school/ University/ Grad student / Useful /
    Purpose of use
    Calculate height in fitness app
    [2]  2018/08/30 22:49   Male / 60 years old level or over / An engineer / Useful /
    Purpose of use
    good calculator
    The altimeter of my aircraft does not take into account the temperature.
    Why do you need temperature to compute elevation data ?
    [3]  2018/07/18 03:23   Male / 20 years old level / An office worker / A public employee / Very /
    How can one calculate the QNH for another elevation that is not more than 16 meters away from where the barometer is?
    [4]  2018/05/31 15:00   Male / Under 20 years old / Elementary school/ Junior high-school student / Very /
    Purpose of use
    Python altitude from pressure and temperature calculator.
    [5]  2017/09/18 14:28   Male / 40 years old level / An engineer / Very /
    Purpose of use
    Checking equations for altimeter
    [6]  2017/08/09 08:54   Male / 50 years old level / An engineer / Very /
    Purpose of use
    Crosscheck using hypsometric formula to compute altitude from pressure output of MEMS sensor for aeronautical instrumentation purposes.
    [7]  2017/07/10 08:37   Male / Under 20 years old / An engineer / Very /
    Purpose of use
    Hobby Airplane
    [8]  2017/05/24 08:12   Male / 60 years old level or over / An engineer / Useful /
    Purpose of use
    If I wantt o use this in altitude calculations for a drone, every time I take it out I have to research the sea level temperature and pressure and adjust accordingly?
    [9]  2016/07/07 17:22   Male / 30 years old level / Self-employed people / Useful /
    Purpose of use
    Educational project
    How can I improve the formula for use above 11km in altitude?
    [10]  2016/02/23 06:17   Male / 30 years old level / A teacher / A researcher / Very /
    Purpose of use
    In order to calculate elevation using Arduino and BMP180 air pressure detector. It works like a magic!
    I'm not sure if this formula is the latest one.


    Thank you for your questionnaire.
    Sending completion


    To improve this 'Altitude from atmospheric pressure Calculator', please fill in questionnaire.
    Male or Female ?



    Purpose of use?
    Comment/Request (Click here to report a bug).Bug report (Click here to report questionnaire.)
    Calculation bug(Please enter information such as specific input values, calculation result, correct result, and reference materials (URL and documents).)
    Text bug(Please enter information such as wrong and correct texts)
    Your feedback and comments may be posted as customer voice.