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Pressure Conversions

Pressure is an important physical quantity that is used to measure the force exerted on a surface per unit area. It is a fundamental concept in physics and engineering, and is used in a wide range of applications, from monitoring air and water pressure in industrial systems to measuring blood pressure in the human body. Understanding pressure and its various units of measurement is crucial for anyone working in these fields.

Pressure can be measured in a variety of units, such as pounds per square inch (PSI), inches of Mercury (inHg), Bars, Pascals (Pa), mm of water and inches of water (inH2O). Each unit has its own unique characteristics and is suited for different types of applications. On this page, we will provide a comprehensive overview of the most commonly used pressure units and their conversions.

Pressure Converter


Convert Inches of Water to:


To perform your own calculation, use the chart below:

Multiply By To Get
inch of h2o 1.868 mm of Hg
inch of h2o 0.074 in Hg
inch of h2o 0.249 k/Pa
inch of h2o 249.1 Pascals
inch of h2o 2.491 mBar
inch of h2o 0.036 PSI
inch of h2o 25.4 mm of h2o
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