3D Frame Calculator
Direct matrix-method solver (12x12 element stiffness + transformation matrix) in TypeScript.
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Displacement Scale
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3D frame calculator
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Beam calculator
Reactions, shear and moment diagrams for pin, roller and fixed supports.
Shear and moment diagrams
SFD and BMD for any beam and load case.
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Maximum bending moment and where it occurs.
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Shear force diagram and maximum shear.
Support reaction calculator
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Member forces, tension or compression, and reactions.
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Centroid, area and moment of inertia of built-up shapes.
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Area, I, product of inertia and principal axes of any polygon.
2D frame calculator
Reactions and member end forces for plane frames.
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Unit converter
psi, ksi, ksf, kPa, kips, kN, kip-ft and N·m.
FE Civil practice
Free FE exam practice problems with worked solutions.