Pressure is the result of a force applied to a surface. Pressure is the amount of force acting per unit area. The symbol of pressure is P. Pressure is a scalar quantity. It relates the vector surface element (a vector normal to the surface) with the normal force acting on it. The SI unit for pressure is the pascal (Pa), equal to one newton per square meter (N/m2 or kg·m−1·s−2).
P is the pressure,
F is the normal force,
A is the area of the surface area on contact
Pressure = Force / Area.