Mechanical Engineering Toolkit vs Gear Calculator Pro

Mechanical Engineering Toolkit is a professional engineering calculator for students, researchers, and practicing engineers. Choose a formula, enter your variables, and get instant results — with calculation steps, formulas, diagrams, and unit conversions shown along the way. Switch between SI and Imperial units anytime, save favorites, and find the right tool fast with recommendations by major. Save your inputs as named projects, and export any result as text, image, CSV or PDF. Categories and tools: Mechanics of Material • Moments of inertia of plane areas • Force-displacement relation of a bar • Torsion formula and angle of twist • Flexure formula of a beam • Transverse shear stress • Deflections and slopes of cantilever and simple beams • Plane stress transformation and Mohr's circle • Principal stresses and planes • Spherical shell and thin-walled pressure vessel stresses • Buckling load of a column • Thermal deformation and stress • Combined loading • Bolted / riveted joints • Fatigue safety factor • Shaft power and torque Statics • Centroid of an area • Resultant of a force system • Beam reactions • 2D truss analysis Machine Design • Helical compression springs • Spur gear geometry and stresses • Shaft fatigue design (DE-Goodman) • Bearing L10 life • Belt and chain drives • Bolt preload / torque-tension • Fillet weld strength • Press / shrink-fit interference • Shaft critical speed (Dunkerley) • Beam natural frequency (five end conditions) • Torsional natural frequency (one or two rotors) Fluids & Thermal • Reynolds number and flow regime • Pipe pressure drop (Darcy-Weisbach with Colebrook) • Pump and fan power • Composite wall conduction • Fin efficiency • Heat exchanger sizing by LMTD Theory of Elasticity • Constitutive relation of linear elastic material • Stress/strain of linear elastic material Composite Material • Lamina and laminate stress/strain • Lamina engineering constants • Laminate plane and 3D properties • Rule of mixtures • Failure criteria (Tsai-Hill, Tsai-Wu) Reference Tables • Drill & tap chart (metric and imperial thread series) • ISO 286 fits & tolerances • Standard sections (AISC W, IPE, HEB) • Unit converter No account required. Works offline. Available in English, Chinese, German, French, and Japanese.

The Gear Calculation App is a professional mechanical design tool tailored for engineers and mechanical enthusiasts. Whether you need to design gears, calculate gear parameters, or optimize mechanical transmission systems, this app can meet your needs. With its simple and intuitive interface and powerful calculation functions, you can easily calculate key parameters such as gear module, number of teeth, pressure angle, pitch diameter, and addendum circle diameter. Main Features: Accurate Calculations: Supports precise calculations for various gear types, including spur gears, helical gears, worm gears, and more, ensuring that your design data is highly accurate. Custom Parameters: Allows users to input custom parameters and adjust gear design and calculation methods as needed. Real-time Preview: Calculation results are instantly visible, helping you quickly verify the feasibility of your design. Efficient Tools: Includes a variety of commonly used formulas and tools, simplifying the gear design and analysis process. User-friendly: Easy to operate, suitable for users of all levels, from beginners to professional engineers. Whether you are engaged in mechanical design work or studying gear mechanics, this app will become an indispensable assistant for you. Download the Gear Calculation App now and start optimizing your designs!