The SI Unit of Pressure is Pascal (Pa), which is Nm² The formula for calculating pressure = force/area. The SI Unit of measuring force is 'Newton' (N) and the SI Unit of measuring area is 'm²' The SI system is built around seven base units , and from these, many derived units are formed to measure complex quantities such as force, pressure , and energy. We will look at what is the unit of pressure by first learning about the SI system, which is the International System of Units , derived from the metric system. The SI unit also elaborately known as the International System of Units has been mainly adopted from French Système international (d’unités). This is a modern version of the metric system and is popularly used when measuring physical quantities. This system is built upon seven base units which are, Metre, Kilogram, Ampere, Kelvin ... Pressure Units The SI unit of pressure is the "Pascal (Pa)" , where 1 Pa = 1 N/m 2, i.e. one Newton per square meter. The Newton is the unit of force, so it's easy to see that the Pascal meets the requirements for a unit of pressure . However, the Pascal is quite a small unit for things like atmospheric pressure , so there are quite a large number of alternatives also in use. One of the simplest ways to do this is to simply use kPa (i.e. kilopascals, or thousands of pascals), but there are ...
