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] /83Disp-Num
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[1]  2019/01/10 04:21   Male / 50 years old level / An office worker / A public employee / Very /
Purpose of use
weather station calibration
[2]  2019/01/04 21:25   Male / 60 years old level or over / A retired person / Very /
Purpose of use
Check calibration of mercury barometer
[3]  2018/12/18 08:03   Male / 30 years old level / An office worker / A public employee / Very /
Purpose of use
Entering in offsets for field pressure equipment
Comment/Request
Thank you!
[4]  2018/07/20 03:27   Male / 50 years old level / An engineer / Useful /
Purpose of use
weather calc
Comment/Request
using the shown formula i come up with a different answer with the same inputs. using p=1012.265, h=105, t=17.19 the website calculates 1024.84. running the formula by hand and in excel i get 1004.6341. any ideas where the error is?
from Keisan
We have tried it in excel, but the result was same.(1024.84)
[5]  2018/07/08 03:39   Male / 40 years old level / An engineer / Very /
Purpose of use
Calibrate BME280 sensor connected to NodeMCU ESP8266 module. Used altitude data from maps https://www.daftlogic.com/sandbox-google-maps-find-altitude.htm + temperature reading from the sensor itself and compared to the closest airport data http://tgftp.nws.noaa.gov/weather/current/SBSP.html , less than 1 Km away.
Comment/Request
Thanks!
[6]  2018/06/22 11:19   Male / 40 years old level / An engineer / Very /
Purpose of use
Calibrate BME280 Sensor sent to Blynk via MKR1000 Arduino Board
Comment/Request
Great tool! Thanks.
[7]  2018/04/27 09:07   Male / 60 years old level or over / A retired people / Very /
Purpose of use
calibrate home weather station
Comment/Request
it disagreed with BOM MSLP isobars by a couple of hpa but close enough for my needs, thanks for a great conversion tool!
[8]  2018/01/19 04:04   Male / 40 years old level / Self-employed people / Very /
Purpose of use
Adjust watch barometer to compare with marine weather forecast
[9]  2018/01/14 02:33   Male / 60 years old level or over / A retired people / Very /
Purpose of use
Checking my conversion formula from a BME180 sensor.
[10]  2018/01/13 23:55   Male / 40 years old level / An engineer / Very /
Purpose of use
WEATHER STATION

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