Bulk Modulus Calculator

Calculate bulk modulus, compressibility, volumetric strain, and convert isotropic elastic constants with unit options.

Buckling Calculator

Estimate column buckling load, stress, slenderness, and governing axis with Euler or Johnson methods and end-condition effects.

Bend Allowance Calculator

Calculate bend allowance, outside setback, bend deduction, flat length, and inferred K-factor for one sheet metal bend.

Angle of Twist Calculator

Calculate shaft twist, torque, length, or required diameter for solid or hollow circular shafts with clear units and checks.

Principal Stress Calculator

Calculate 2D plane-stress principal stresses, principal angles, mean stress, and maximum in-plane shear with clear sign handling.

Number Density Calculator

Calculate number density from moles, particles, mass, or ideal gas inputs with clear unit conversions and lab-friendly outputs.