Free structural calculators
Quick, no-sign-up structural tools that run entirely in your browser. Every result is cross-checked live against the FERS finite-element solver, so you can trust the numbers.
Prefer to read one through first? See the worked portal frame example or the worked Eurocode 3 beam check.
Area, centroid, second moments of area, elastic and plastic moduli, torsion constant, warping constant and shear centre for any cross-section you build or draw.
Draw any 2D beam or frame and get support reactions, a free-body diagram and axial, shear and bending-moment diagrams.
Maximum bending moment, support reactions and deflection for a central point load or a uniformly distributed load.
Any mix of point loads, distributed loads and moments: reactions, shear, moment, deflection and slope, step by step, in SI or US units.
Support and midspan bending moments, reactions and deflection for a fixed-fixed (encastré) beam.
Fixed-end and span bending moments, both reactions and deflection for a fixed-pinned beam.
EN 1993-1-1 unity check for an IPE/HEA/HEB beam — bending, shear, N+M and lateral-torsional buckling utilizations, solved live with a per-clause trace.
See FERS reproduce the standard NAFEMS finite-element benchmarks it can represent — beam free-vibration and plate/membrane statics — with live in-browser solving and target-vs-FERS error.
Describe a steel beam in plain English and get an EN 1993-1-1 check computed by the real FERS solver — a limited free demo (a few messages per day); connect your own LLM via MCP for unlimited use.
Need the full toolbox?
Open the full FERS Cloud app for 3D frames and trusses, continuous beams, load combinations and Eurocode EC3 steel checks.