Convert millimeter of water (4°c) to pascal
Millimeter of Water (4°C)
Millimetre of water at 4°C (mmH₂O) is a unit of pressure equal to approximately 9.80638 pascals, defined as the pressure exerted by a one-millimetre column of water at 4°C. It is used in low-pressure measurement applications including HVAC systems, medical ventilators, and draft pressure gauges. One mmH₂O equals one-tenth of a cmH₂O.
Pascal
The pascal (Pa) is the SI derived unit of pressure, defined as one newton per square metre (N/m²). It was adopted by the General Conference on Weights and Measures in 1971 and named after the French mathematician and physicist Blaise Pascal. Standard atmospheric pressure is approximately 101,325 Pa, and it is widely used in science, engineering, and meteorology.