Convert Millimeter of Water to Millipascal (mmH2O to Millipascal)

Millimeter of Water (mmH2O) and Millipascal (Millipascal) are both units of pressure. With the conversion form below, you can effortlessly and accurately convert millimeter of water to millipascal. This free online calculator tool makes it simple and easy to perform the conversion from mmH2O unit to the Millipascal 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 millimeter of water (symbol: mmH₂O or mmH2O) is a non-SI unit of pressure defined as the pressure exerted by a one-millimeter column of water under standard gravity. It is commonly used in ventilation systems, clean rooms, HVAC engineering, and laboratory instruments to measure small pressure differences. Although the pascal is the SI unit of pressure, the millimeter of water remains a practical unit for low-pressure applications. It is based on the concept of a water column.

One millimeter of water is equal to 9.80665 pascals, 0.1 centimeter of water, 0.0000980665 bar, 0.00142233 pounds per square inch, and 0.00980665 kilopascal. The millimeter of water is widely used for measuring very low gas and liquid pressures.

The millipascal (symbol: mPa) is an SI-derived unit of pressure equal to one-thousandth (0.001) of a pascal. It is used in acoustics, precision engineering, laboratory testing, and scientific research where very small pressure values need to be measured accurately. The millipascal uses the SI prefix milli, representing one-thousandth.

One millipascal is equal to 0.001 pascal, 1,000 micropascals, 0.1 centipascal, 1×10^-8 bar, and 9.86923×10^-9 standard atmosphere. The millipascal provides a convenient SI unit for expressing very low pressure values.