Hydraulic Pressure Calculator

Calculate hydraulic pressure from force and piston area. Enter cylinder force, bore diameter, piston area, or rod diameter to estimate hydraulic pressure in PSI, kPa, bar, MPa, pascals, and tons per square inch.

Calculate Hydraulic Pressure

Hydraulic Pressure = Force ÷ Area
Your result will appear here.

How the hydraulic pressure calculator works

Force:
Enter the force the cylinder needs to create. Higher force requires higher pressure for the same piston area.

Area:
Use bore diameter, piston area, or annular area. Annular area is useful for rod-side or retract-side calculations.

Efficiency:
Lower efficiency increases the estimated required pressure to account for losses.

Why use a hydraulic pressure calculator?

A hydraulic pressure calculator is useful for hydraulic cylinders, presses, jacks, actuators, equipment sizing, shop estimates, mechanical design examples, and comparing force, bore size, and pressure.

This calculator is for estimates. Real hydraulic systems also need hose ratings, cylinder ratings, relief valve settings, flow, seals, temperature, and safety factors.

Hydraulic pressure formula

The basic hydraulic pressure formula is:

Pressure = Force ÷ Area

Hydraulic pressure calculator tips

Frequently asked questions

How do you calculate hydraulic pressure?

Hydraulic pressure is calculated by dividing force by area. In U.S. units, PSI equals pounds-force divided by square inches.

Does a larger hydraulic cylinder need less pressure?

Yes. A larger piston area creates more force at the same pressure, so less pressure is needed for the same force.

What is annular area in hydraulics?

Annular area is the piston area minus the rod area. It is commonly used for rod-side or retract-side cylinder calculations.

What is the formula for hydraulic cylinder force?

Hydraulic cylinder force equals pressure multiplied by piston area. Rearranged, pressure equals force divided by area.