Hydraulic Force Calculator

Information

Calculate hydraulic cylinder forces (forward and backward) from pressure and cylinder dimensions.

How to Use:

  1. Set Pressure: Select system pressure in bar from the dropdown (ISO 4401 standard values)
  2. Set Cylinder Size: Select piston/rod diameter set from the dropdown (ISO 4401 standard sizes)
  3. View Results: Forward force = extension force; Backward force = retraction force
  4. Copy Values: Click any result value (underlined) to copy it to clipboard
  5. Details: See full calculation breakdown below the results

Unit Conversions:
1 bar = 100,000 Pa
1 Pa = 1 N/m²
1 N = 0.102 kgf
1 mm = 0.001 m

Inputs

bar

Or choose from standard pressures (ISO 3322):
25 · 40 · 63 · 100 · 160 · 250 · 315 · 400 bar

mm
mm

Or choose from standard bore/rod sets (ISO 3320 / ISO 6020-2):
Ø40/22 · Ø40/28 · Ø50/28 · Ø50/36 · Ø63/36 · Ø63/45 · Ø80/45 · Ø80/56 · Ø100/56 · Ø100/70 · Ø125/70 · Ø125/90 · Ø160/90 · Ø160/110 · Ø200/110 · Ø200/140

Results

Forward force:
Backward force:


This is a notification

Frequently Asked Questions

What does the Hydraulic Force Calculator do?

It calculates the force produced by a hydraulic cylinder from pressure, bore diameter, and rod size — useful for system design and cylinder sizing.

How do I use it?

Enter the hydraulic pressure (bar), bore diameter (mm), and rod diameter (mm). The result shows extend and retract forces in kN.

Is it free?

Yes. This Kod5 tool runs in the browser, requires no installation, and is free to use.