Hydraulic Pressure Calculator

Inputs

Target force (F)

Required cylinder output force.

Bore diameter (B)

Cylinder bore (piston diameter).

Rod diameter (d)

Piston rod diameter, subtracted on the pull stroke.

Stroke

Push uses full piston area; pull uses annulus area after subtracting the rod.

Efficiency factor (η)

Optional derating for seal friction and pressure losses. Use 1.0 for theoretical pressure.

Default result

Required pressure(P)

141.5bar

Pass

Also computed

Theoretical pressure127.3bar

Before the efficiency factor.

Working area(A)1,963mm²

Piston area1,963mm²

Rod area380.1mm²

Annulus area1,583mm²

Method notes 3 notes

Pressure is target force divided by working area: P = F / A.
Push uses the full piston area; pull uses the annulus area after subtracting rod area.
Efficiency factor is a practical derating for seal friction, pressure drop and back pressure.