# Atmospheric pressure from altitude Calculator

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

 Sea-level pressure P0 hPa at present location Altitude h m Temperature T °C 6dgt10dgt14dgt18dgt22dgt26dgt30dgt34dgt38dgt42dgt46dgt50dgt at present location: Atmospheric pressure P hPa = 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.$\normal Hypsometric\ formula\\\hspace{20}P=P_0 \left(1-{\large\frac{0.0065h}{T+0.0065h+273.15}}\right)^{\small 5.257}\\$

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