Free Online Tools
Industrial-grade pneumatic calculators and engineering converters for OEM manufacturers, system designers, and automation engineers.
In pneumatic system design, calculation errors can lead to undersized cylinders, excessive air consumption, unstable pressure drops, and long-term system inefficiencies.
This toolkit provides reliable engineering calculators to help determine cylinder force, airflow demand, Cv values, pressure conversion, and compression ratios. All tools are browser-based, free to use, and optimized for industrial applications.
Calculate theoretical and effective push/pull force based on:
Formula
F = P × A
Estimate compressed air usage per minute based on:
Used For
Compressor sizing and air supply planning.
Determine flow rate or pressure drop using valve Cv value. Includes:
Formula
Q = Cv × √(ΔP × SG)
Calculate compression ratio for pneumatic systems.
CR = Pdischarge / Pinlet
Used For
System diagnostics
Compressor eval
Pressure design
Convert between: Pa, bar, psi, MPa, atm, kgf/cm², Torr, mmHg, inH₂O
Cases: Eng. drawings, documentation, product specs.
Convert between: L/min, SCFM, m³/h, L/s
Cases: Air compressor selection, actuator sizing.
Quick reference conversion table for: Pressure, Flow, Force, Volume.
Ideal for fast lookup without calculation.
Core mathematics behind our pneumatic calculators
Force = Pressure × Effective Area
Effective Area = π × (D/2)²
For retraction force:
Subtract rod area from piston area.
Air Volume =
Cylinder Area × Stroke × Cycles
Q = Cv × √(ΔP × SG)
Q = Flow rate
ΔP = Pressure drop
SG = Specific gravity
Cylinder force is calculated by multiplying working pressure by effective piston area.
Typically between 1.2 and 1.5 depending on load variability.
1 bar = 14.5038 psi.
Cv represents the flow coefficient and determines how much fluid passes through a valve under given pressure conditions.
Multiply cylinder volume per stroke by operating pressure ratio and cycle frequency.
