Mechanical Engineering Toolkit

Mechanical Engineering Toolkit is a professional calculator for mechanical engineering students, researchers, and practicing engineers. Solve problems across mechanics of materials, statics, machine design, fluids, thermal engineering, elasticity, and composite materials with formulas, calculation steps, diagrams, and unit conversions.

Switch between SI and Imperial units, save favorites and named projects, and export results as text, images, CSV, or PDF. Reference tables include drill and tap charts, ISO fits and tolerances, standard structural sections, and a unit converter. The app works offline, requires no account, and supports English, Chinese, German, French, and Japanese.