Hydraulic Calculations

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Please note: Only if you have a device with Android KitKat and greater you will see an additional button for the PLUS version of this app on the start page.
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An easy to use tool to calculate hydraulic cylinder, pumps, motors, fluid, pipes, and more. Incl. unit converter.

Now with USCS system of measurement.

At the moment following hydraulic calculations are available:

Force, Pressure, Area - Calculate one unknown variable of three

Hydraulic cylinder calculations - Forces, Areas, Pressure etc.

Pressure drop through a straight pipe - Calculation of Δp

Pressure drop through an orifice - Calculation of Δp

Temperature change due to pressure drop - Calculation of ΔT

Leakage flow in a radial gap - Calculation of n Q, P and vm

Hydraulic pump calculations - Calculation of output flow rate, displacement, pump speed, shaft power, hydraulic power, shaft torque, combined efficiency

Hydraulic motor calculations - Calculation of oil flow, displacement, motor speed, input power, output power, motor torque, combined efficiency


A unit coverter is included and following conversions are available:

Conversion betweeen power units: W, PS, kcal/h
Conversion betweeen pressure units: bar, MPa, psi
Conversion betweeen length units:m, ft, inch
Conversion betweeen temperature units: °C, K, °F
Conversion betweeen velocity units: km/h, m/s, mph
Conversion betweeen units of kinematic viscosity: St, cSt, m²/s

Thank you for installing this app. I hope you enjoy it and find it useful. If you have any questions, suggestions, or criticism, please write me at [email protected]. I'm looking forward to receiving some feedback from you.

*I spent a lot of time to do a good english translation and did not just pass the german text through a translation software. But I'm not a native speaker and there may be some errors. If you find them, please write at [email protected]. I would be very grateful for this kind of feedback and help*


By downloading this app you accept following disclaimer:

HYBE Apps disclaims responsibility for the possible errors in this app. There is no liability accepted for the correctness of the calculations done with this app. All calculations are done at your own risk. You have to critically evaluate the results before you use them.