Engineering calculators

Beta · 103 reference calculators

Find by what you want to doRotate, lift or grip: choose a calculation from the motion and conditions.Browse the calculation listFind beam, section, wind, fluid and electrical calculations by name or category.

Calculation list

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103 calculators

Beam deflection & bending Section properties Tabletop / shelf load and deflection Tall-object tipping and sliding Moving force, slope & power Pneumatic cylinder thrust

Mass & centre of gravity (2)

Shape volume & mass Assembly centre of gravity & inertia

Transmission & machining (8)

Spur gears & rack basics Open-belt length & speed ratio Cutting speed, rpm & feed Thread friction, axial force & torque Parallel-key shear, bearing and required length Ball-screw shaft buckling and critical speed Belt tension and vibration frequency Sheet-metal bend allowance and flat length

Loads, drives & fasteners (20)

Moving force, slope & power Pulley lifting force & power Ball / lead screw theoretical thrust Bolt tightening torque & preload Lever & moment balance Tall-object tipping and sliding Counterweight against tipping Sling angle and leg tension Average impact force from stopping distance Required gripping force for two jaws Bolted-joint separation, slip and clamp force Thread engagement and pullout estimate Four-block guide layout and vertical loads Required caster load rating Lid / gas-spring operating force and mounting geometry Shock-absorber energy and repeated-duty capacity Roller conveyor speed and drive torque Belt conveyor pull, torque and traction Roller pitch, support count and load per roller Roller tube / round shaft bending stress and deflection

Motors & drives (7)

Mass inertia & parallel axes Motor acceleration torque Travel distance, time & motion profile Cycle peak & RMS motor torque Rolling-bearing basic rating life Wrap friction / capstan tension Bearing reactions and equivalent loads

Electrical (8)

DC current, power & energy Single / three-phase motor current Cable voltage drop DC inverse, resistor networks & divider Generation power & energy estimate RC charging and discharging Three-phase power factor correction 4–20 mA / 0–10 V pressure sensor scaling

Tolerances & dimensions (4)

Dimensional tolerance stack Hole / shaft clearance and interference Press / shrink fit pressure and transmission Two-hole and slot assembly tolerance

Springs & vibration (7)

Compression spring rate & stress Oil and viscous damper force and heat Extension coil spring load and rate Torsion coil spring torque and body stress Cantilever leaf spring load and deflection Torque hinge and rotary damper operating force and holding Rubber mount natural frequency and vibration transmissibility

Solid mechanics & beams (16)

Section properties Beam deflection & bending Axial stress & extension Circular shaft torsion Euler column buckling Section volume & mass Average pin shear stress Combined beam loads & required I / Z Solid shaft combined stress & diameter Eccentric in-plane bolt group Hertz contact stress: cylinders & spheres Tabletop / shelf load and deflection Fillet-weld direct shear Thin-cylinder internal-pressure stress Pin-hole bearing, edge tear-out and net section Uniform load on a four-edge simply supported plate

Motion & energy (5)

Kinetic & potential energy Torque, speed & power Acceleration & driving force Braking distance, time and absorbed energy Four-bar position, speed ratio and drive torque

Air, water & fluids (7)

Pipe velocity & Reynolds number Hydrostatic pressure & bottom force Wind load & support moment Pipe pressure loss & loss power Water-jet force on a plate Hydrostatic side-wall force and centre of pressure Estimated drag from flowing water

Pneumatics & fluid power (7)

Pneumatic cylinder thrust Cylinder air consumption Vacuum holding force Cylinder bore & required flow Pump total head & power Water flow: pipes, orifices, weirs & channels Air-receiver usable volume and duration

Heat (7)

Heating energy & time Heat conduction through a slab Linear thermal expansion Convective heat transfer Restrained-bar thermal stress Thermal radiation exchange Ventilation from heat load and temperature rise

Vibration (1)

Mass–spring vibration

Math & dimensions (4)

Right triangle & angles Bolt-circle spacing Arc, taper & hole coordinates Probability, combinations & distributions

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図で条件を整理してから計算し、最後に実際の部品仕様を確認します。

Purpose-based design guides

Understand conditions with diagrams, calculate, then verify actual specifications.

Reference calculations do not certify design suitability or safety.

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Understand a calculation with diagrams