Accurately correct your barometer reading to sea level using our free online calculator. Essential for precise weather forecasting, this tool adjusts observed station pressure based on altitude and temperature. Understand how to calculate sea level pressure for consistent atmospheric data comparison.
Formula:
The formula used to correct station pressure to sea level pressure is based on the standard atmospheric pressure height formula:
PSL = Pstation ⋅ (1 - (0.0065 ⋅ h) / (Tstation + 273.15 + 0.0065 ⋅ h))-5.257
- PSL: Sea Level Pressure (hPa)
- Pstation: Station Pressure (observed barometric pressure at your current altitude in hPa)
- h: Station Altitude (height above sea level in meters)
- Tstation: Station Temperature (air temperature at the barometer's location in Celsius)
- 0.0065: Standard atmospheric lapse rate (K/m)
- 273.15: Conversion factor from Celsius to Kelvin
- -5.257: Exponent derived from atmospheric properties (g ⋅ M / (R ⋅ L))