๐ค๏ธ Weather
Barometric Pressure Converter
Weather reports quote pressure in whatever unit the country uses, so the same system is 1013 hPa in Europe and 29.92 inHg in the United States. Converting between them matters when comparing forecasts or setting an altimeter.
How it works
Pressure value
Unit
Altitude (for sea-level correction)
Hectopascals
Millibars
Inches of mercury
Millimetres of mercury
Kilopascals
Atmospheres
Pounds per square inch
Equivalent at sea level
Pressure pattern
Frequently asked questions
How do I use the Barometric Pressure Converter?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.