This sea level pressure calculator adjusts a measured station pressure to its equivalent at sea level, correcting for your altitude and temperature. Enter the three values above.
Formula
P₀ = P × (1 − 0.0065h ÷ (T + 0.0065h + 273.15))−5.257
- P — station pressure, h — altitude (m), T — temperature (°C)
Example
950 hPa at 500 m, 15 °C: P₀ ≈ 1007.7 hPa.
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Frequently Asked Questions
How do I convert station pressure to sea level?
Apply the barometric correction using your altitude and temperature; the calculator uses the standard formula above.
Why adjust pressure to sea level?
So weather stations at different elevations can be compared on the same baseline for forecasting.
What is standard sea level pressure?
About 1013.25 hPa (29.92 inHg) in the standard atmosphere.