Conversion to sea-level pressure Calculator

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

The atmospheric pressure shown on the weather map is adjusted to the equivalent sea level pressure. (1atm=1013.25hPa)
Conversion to sea-level pressure
    1. at present location:
Altitude h
    1. m
Atmospheric pressure P
    1. hPa
Temperature T
    1. °C

Sea-level pressure P0
    1.  
    2. hPa
=
    1.  
    2. atm
Conversion to sea-level pressure
[1-10] /101Disp-Num
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[1]  2021/01/25 03:46   Male / 50 years old level / Self-employed people / Very /
Purpose of use
Make effective use of the integrated pressure sensor within Home Automation solution.
[2]  2021/01/08 23:49   Male / 30 years old level / An engineer / Useful /
Purpose of use
I was looking for the conversion formula which I could use in my smart home setup (OpenHab based).
[3]  2021/01/08 02:09   Male / Under 20 years old / High-school/ University/ Grad student / Very /
Purpose of use
Going to be used to resolve pressure observations from mobile mesonets and a home built AWOS station.
[4]  2020/09/23 21:30   Male / 60 years old level or over / A retired person / Very /
Purpose of use
Home-made weather station.
Comment/Request
A big "thank you!" to "2020/05/19 06:51 Male / 50 years old level / An engineer / Very / " -- that code did indeed help a great deal. Thanks too, to whomever researched the equation. I now have relative humidity to within a millibar (hPa) or so. Result!
[5]  2020/07/03 17:47   Male / 30 years old level / A teacher / A researcher / Very /
Purpose of use
conversion of pressure sensor readout
Comment/Request
thanks for the formula!
[6]  2020/05/19 06:51   Male / 50 years old level / An engineer / Very /
Purpose of use
Want to understand the BME280 and relevant information for my Arduino weather station. Took some time to get the correct formula in Sketch due to my programming level. Hopefully this will help others:

float p0 = ((pres/100) * pow(1 - (0.0065 * h / (temp + 0.0065 * h + 273.15)), -5.257));
[7]  2020/03/30 06:21   Female / 20 years old level / High-school/ University/ Grad student / Useful /
Purpose of use
Check own calculations made using hyposometric equation
Comment/Request
The ability to use different units would be nice.
[8]  2020/03/23 03:43   Male / 20 years old level / Others / Useful /
Purpose of use
Weather observation.
Comment/Request
Please provide an option to input data in imperial units (degrees Fahrenheit, inHg, feet). Thank you.
[9]  2020/03/21 23:05   Male / 60 years old level or over / High-school/ University/ Grad student / Very /
Purpose of use
Building a ESP32 Web Server with BME280 – Advanced Weather Station
[10]  2020/01/05 02:13   Male / 60 years old level or over / A retired person / Very /
Purpose of use
Reset weather station

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