Hydraulic pressure is a force that exerted by a liquid onto a confined surface. When it is applied on a fluid in any confined area, the force is transmitted in all directions by the fluid leading the system to its operation. It is more powerful than pneumatic or mechanical pressure, due to which it is used in applications dealing with greater loads. A pressure guage is required to measure the pressure of the fluid. The formula to calculate hydraulic pressure is F = PA, where, F = force, P = pressure and A = area.