Engineering & mechanics
tools and calculators.
22 practical tools with clear inputs and explanations. Choose a tool below, or explore a role-based toolbox for a collection that fits your day.
Rectangle section properties
Find centroidal area moments and elastic section moduli for a rectangular section.
Elastic bending stress
Calculate outer-fibre normal stress from bending moment and elastic section modulus.
Beam deflection curves
Plot deflection along a simply supported or cantilever beam for common loading cases.
Euler column buckling
Estimate ideal elastic critical load from effective length and section inertia.
Circular shaft torsion
Calculate elastic shear stress and twist for solid or hollow circular shafts.
Elastic axial extension
Calculate axial stress, strain and length change of a uniform elastic member.
Belt pulley speeds
Compare pulley RPM and belt speed with a supplied slip allowance.
Open belt pitch length
Find the geometric belt length and wrap angles between two pulleys.
Compound gear train table
Track stage ratios, speed and rotation direction through a compound external gear train.
Spur gear pitch geometry
Translate module and tooth count into common involute gear reference diameters.
Lead screw motion & torque
Relate screw lead, rotational speed, axial force and efficiency.
Hydraulic cylinder force & speed
Compare extension and retraction force, speed and stroke time.
Hydraulic fluid & shaft power
Convert pressure difference and volume flow into fluid power and input power.
Pump affinity scaling
Scale flow, head and power with rotational speed under ideal similarity assumptions.
Pipe Reynolds number
Calculate Reynolds number with explicit density and dynamic viscosity.
Venturi liquid flow estimate
Calculate volume flow from upstream/throat diameters and differential pressure.
Bernoulli mechanical head
Separate pressure, velocity and elevation contributions to fluid head.
Hydrostatic force on a vertical rectangle
Find the resultant gauge force and centre-of-pressure depth.
Free-space radio path loss
Calculate ideal geometric radio loss from frequency and separation.
Fresnel zone clearance
Find a radio Fresnel-zone radius at a point along a path.
Conductor skin depth
Estimate field decay depth in a uniform good conductor.
Wire resistance & temperature
Calculate conductor resistance and apply a supplied linear temperature coefficient.