Mechanical Engineering Toolkit
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Optimal speed stands as the main highlight of Mechanical Engineering Toolkit. Ida yang delivers the ultimate system for APPzone fans. Find extra details via Tools.
Beginner Guide To Run Mechanical Engineering Toolkit
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.
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.
Engineering Equations,Formulas
Updated on
Aug 28, 2026
Data safety
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Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
- This app may share these data types with third partiesLocation, App info and performance, and Device or other IDs
- This app may collect these data typesApp info and performance and Device or other IDs
- Data is encrypted in transit
- Data can’t be deleted
What’s new
New in 1.11.0:
• Every tool now explains itself — tap ? in the app bar for what it computes, the formula, and how to read the result. In all six languages.
• Tolerance stack-up: chain any number of dimensions, by worst-case and RSS.
• Standard pipe schedules (ASME B36.10M, NPS 1/8–24) fill Reynolds Number and Pipe Pressure Drop.
• Projects now hold several calculations and export as one PDF report.
• Every tool now explains itself — tap ? in the app bar for what it computes, the formula, and how to read the result. In all six languages.
• Tolerance stack-up: chain any number of dimensions, by worst-case and RSS.
• Standard pipe schedules (ASME B36.10M, NPS 1/8–24) fill Reynolds Number and Pipe Pressure Drop.
• Projects now hold several calculations and export as one PDF report.
