Convert Inch of water to Nanopascal (inH2O to Nanopascal)

Inch of water (inH2O) and Nanopascal (Nanopascal) are both units of pressure. With the conversion form below, you can effortlessly and accurately convert inch of water to nanopascal. This free online calculator tool makes it simple and easy to perform the conversion from inH2O unit to the Nanopascal unit.

Pressure is the force applied perpendicular to a surface per unit area: P = F / A. The SI unit is the pascal (Pa), equal to one newton per square metre (1 Pa = 1 N/m²). Practical applications use larger units: the bar (1 bar = 100,000 Pa, close to standard atmospheric pressure), atmosphere (atm) (1 atm = 101,325 Pa), and psi (pounds per square inch, used in the US for tire and gas pressures). Blood pressure is measured in mmHg (millimetres of mercury), also called torr.

The inch of water (symbol: inH₂O or inH2O) is a non-SI unit of pressure based on the pressure exerted by a one-inch column of water under standard gravity. It is commonly used in HVAC systems, ventilation, gas distribution, and fluid mechanics to measure low-pressure differences. Although the pascal is the SI unit of pressure, the inch of water remains widely used because it provides a convenient scale for low-pressure applications. More information is available in the inch of water reference.

One inch of water is equal to 249.089 pascals, 2.54 centimeters of water, 0.00249089 bar, 0.0361263 psi, and 0.249089 kilopascals. The inch of water is one of the most commonly used units for measuring low gas and air pressures.

The nanopascal (symbol: nPa) is an SI-derived unit of pressure equal to one billionth (10^-9) of a pascal. It is used in scientific research, vacuum technology, acoustics, and nanotechnology where extremely small pressure values must be measured with high precision. The nanopascal uses the SI prefix nano, representing one billionth.

One nanopascal is equal to 0.000000001 pascal, 0.001 micropascal, 1,000 picopascals, 1×10^-14 bar, and 9.86923×10^-15 standard atmosphere. The nanopascal is an important SI unit for expressing ultra-low pressure values.