Pressure Converter
QNH in hectopascals, inches and millimetres of mercury, and psi.
QNH in hectopascals, inches and millimetres of mercury, and psi. Type in any box and the others follow.
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Frequently asked questions
›What is standard pressure?
1013.25 hPa, which is 29.92 inHg. Below the transition level you set QNH; above it, standard.
›How do I convert inHg to hPa?
Multiply by 33.864: 30.00 inHg is about 1016 hPa.
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