SI unit of pressure is the Pascal (Pa)

Pressure is defined as force per unit area and is a fundamental concept in physics. The SI unit for pressure is the Pascal (Pa), named after the French mathematician and physicist Blaise Pascal. The Pascal is a derived unit, and its definition is based on the relationship between force, area, and pressure.

Pressure (P) = Force (F)/Area (A)

In the SI system, 1 pascal is defined as 1 newton per square meter:

1 Pa = ​1N/1m²

Here:

• The newton (N) is the SI unit of force.
• The meter (m) is the SI unit of length.

The pascal is a versatile unit used in various scientific and engineering fields, such as fluid dynamics, aerodynamics, and material science, to quantify and compare pressures in different systems. Other common units for pressure include kilopascal (kPa) and megapascal (MPa), which are derived from the pascal but represent multiples of 1000 and 1, 000, 000 pascals, respectively.