Hydraulic Engineer
Calculations for Hydraulics
$4.99 · In‑App Purchases · Designed for iPad
HYDRAULIC ENGINEER is the most comprehensive hydraulic engineering calculator
available on the App Store, featuring over 1,000 formulas across 13
specialized calculator categories, 8 temperature scale converters, and 8
professional reference tables.
CALCULATOR CATEGORIES
- Actuator Formulas — cylinder force, stroke, speed, and rod calculations
- Fluid Power — pressure, flow, horsepower, and torque calculations
- Pump Laws — affinity laws for speed, flow, pressure, and power
- Vehicle Drive — drive speed, tractive effort, gradeability, and drawbar pull
- Hydraulic Tubing — wall thickness, burst pressure, and working pressure
- Cylinder Calculations — extend/retract speed, rod end area, and cycle times
- Thermal Hydraulics — heat generation, reservoir cooling, heat exchangers,
and energy to heat fluid
- Oil Velocity & Pressure Loss — pipe velocity, pressure drop per foot, and
total system losses
- Pipe Flow — Reynolds number, Darcy-Weisbach head loss, laminar friction, and
orifice flow
- Accumulator Sizing — discharge volume, precharge pressure, adiabatic and
isothermal gas volumes
- Reservoir Sizing — open/closed circuit sizing, cylinder-based sizing, and
oil weight calculations
- AC/DC Electrical — Ohm's law, power, resistance, inductance, and motor
selection
- Area Formulas — 60 geometric area calculations for every common shape
700+ CONVERSION FORMULAS
Pressure, horsepower, BTU, flow rates, linear measure, square measure, cubic
measure, liquid measure, weights, watts, power, HVAC, metric, sand-to-volume,
and fraction conversions.
8 TEMPERATURE SCALES
Convert between Celsius, Fahrenheit, Kelvin, Rankine, Reaumur, Newton,
Delisle, and Romer — 56 conversion formulas covering every combination.
8 PROFESSIONAL REFERENCE TABLES
- Pipe Schedule (Schedule 40 & 80)
- ISO Viscosity Grades
- Recommended Flow Velocities
- Hydraulic Hose Sizing (SAE)
- JIC Thread Sizes
- Pipe Roughness Values
- O-Ring Sizes (AS568)
- Wire Rope Working Load Limits
KEY FEATURES
- Save and share any calculation result
- Share reference tables
- Calculation history
- Favorites for quick access to your most-used formulas
- Switch between US Customary and SI Metric units
- Dual-unit display shows both US and metric values simultaneously
- Dark mode optimized interface
- Works offline — no internet connection required
PREMIUM UPGRADE
Unlock sharing, advanced calculator sections, and unlimited history with a
one-time lifetime purchase — no subscriptions.
HYDRAULIC ENGINEER is designed for working hydraulic engineers, technicians,
maintenance professionals, and engineering students. If there are formulas or
reference tables you'd like to see added, just use the built-in feedback
feature to let us know.
Minor bug fixes
The developer, Historycentral.com, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Historycentral.com Inc
- Size
- 19.5 MB
- Category
- Productivity
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - iPad
Requires iPadOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.6 or later.
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Hydraulic Pro $3.99
- Copyright
- © Historycentral.com 2026