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Engineering Categories
Explore professional-grade calculators organized by engineering discipline. Each category contains verified, standards-based tools for real design work.
Machine DesignComprehensive mechanical design calculations covering stress, fatigue, and component sizing for machine elements.CAT-01 · 11FastenersFastener selection, bolt preload, tightening torque, and joint integrity calculations per ISO and ASME standards.CAT-02 · 4BearingsRolling element bearing life, load rating, selection, and lubrication calculations per ISO 281.CAT-03 · 2ShaftsShaft sizing under torsion, bending, combined loading, critical speed, and keyway strength calculations.CAT-04 · 3MaterialsMaterial weight, density, and property calculations for metals, plastics, and composites.CAT-05 · 2ManufacturingMachining cost estimation, speeds and feeds, sheet metal bending, and production parameters.CAT-06 · 3Unit ConversionInstant unit conversions for length, mass, force, pressure, torque, power, and temperature.CAT-07 · 1Power TransmissionGear sizing, gearbox ratio, belt drives, chain drives, and mechanical power transmission systems.CAT-08 · 3