Structural Calculators
Enginus supports Eurocodes and major US standards — the applicable standard depends on the calculator (see the pills on each card below). All tools work in both SI and Imperial units. Free tools require no login. Pro tools require a free account.
Beam Calculator
Reactions, shear force diagram, bending moment diagram and deflection for any beam type and loading.
Unit Converter
Convert force, moment, stress, pressure, length and distributed loads between SI and Imperial units instantly.
Rebar Calculator
Calculate rebar areas, number of bars and spacing for any diameter. Supports EC and ACI bar designations.
Section Properties
Area, centroid, moment of inertia, section modulus, radius of gyration, plastic modulus and torsion constant — pick a standard steel section or enter a custom rectangle, I/W, channel, angle, T, circular or hollow shape.
Material Properties
Reference library of concrete, steel, timber, masonry and aluminum properties per EC2, ACI 318, EC3, AISC, EC5, EC6 and EC9 — every value cited to its code clause.
Seismic Base Shear
Equivalent static lateral force method per EC8 and ASCE 7. Includes site class and response spectrum.
Wind Load Calculator
Wind pressure and force on structures per EN 1991-1-4 and ASCE 7-22.
RC Beam Design
Complete flexure, shear and serviceability design per EC2 and ACI 318-19.
RC Slab Design
One-way and two-way slab design with moment coefficients per EC2 and ACI.
RC Column Design
Axial and biaxial bending design with interaction diagram per EC2 and ACI.
Steel Beam Design
I-beam design with section classification, bending, shear, LTB and deflection per EC3 and AISC 360.
Load Combination Generator
Every factored ULS and SLS combination per ASCE 7 and EN 1990, with governing case, code clauses and Excel export.
Column Interaction Diagram
Full strain-compatibility P-M interaction envelope for rectangular and circular RC columns, with a direct axial load / moment design-point check.
Foundation Design
Isolated, combined, strip, mat and pile-cap footing design — bearing, flexure, one-way and punching shear, and development length.
Retaining Wall Design
Cantilever and gravity retaining walls — overturning, sliding, bearing utilization and stem/toe/heel reinforcement per EC7+EC2 and ASCE 7+ACI 318, with Rankine or Coulomb active earth pressure.
Connection Design
Bolted shear (single/double angle, shear tab), bolted moment (flush/extended end-plate) and welded steel connections — bolt shear, bearing, block shear, prying action and fillet weld group capacity per EN 1993-1-8 and AISC 360.
Truss Analysis
Arbitrary-geometry 2D pin-jointed truss analysis — graphical or accessible table geometry input, stiffness-method solve, member axial forces and tension/buckling capacity per EC3 and AISC 360.
Frame Analysis
Arbitrary-geometry 2D rigid frame analysis — graphical or accessible table geometry input, direct stiffness method with member self-loads, and combined bending/shear/axial checks per EC3 and AISC 360.
Design Basis Report
Define your project’s codes, materials, loads, safety factors and assumptions — and export a submittal-ready Design Basis Report as DOCX or PDF.