Simple Machines provide a mechanical advantage Lever and help to amplify the force that can be applied on an object without a motor, hydraulics or other powered mechanism. They were first developed to assist humans in movement of heavy objects, but are employed in machines in order to maximize the effect of the motorize or engine (e.g. the gears in an automatic transmission in a motorcar).

The Fluid Power equation calculates how much Power (hp)is generated given a specified Pressure (P) and Flow (Q).

The Fluid Pressure equation calculates the Pressure (P) given the Force (F) and Unit Area (A).

The Industrial Fluid Equations Collection contains a set of equations related to fluid (i.e. hydraulic, pneumatic) systems and their components (i.e. valves, pumps, pistons, actuators, accumulators).

The Compressibility of Oil equation calculates approximitely how much additional oil (V_{A}) must be added to the current Volume of Oil Under Pressure (V) to reach a specified Pressure (P).

The Actuator Cylinder Area (Radius) equation determines an Actuator Cylinder's Area (A) given it's Radius (R).

The Actuator Cylinder Force equation calculates the Force (F) given the Pressure (P) and Area (A).

The Actuator Cylinder Volume Capacity equation calculates the Volume or Capacity (V) given the Radius (R) in inches (in) and Length of Stroke (L) in inches (in).

The Actuator Cylinder Volume Capacity equation calculates the Volume or Capacity (V) given the Area (A) in square inches (in^{2}) and Length of Stroke (L) in inches (in).