Push it
to failure.
Drag the load up and watch a real simply-supported beam earn its keep — deflection, stress and utilization update live, and the concrete peels back at the limit to show exactly what's carrying it.
Try the Beam Calculator →Tools built for real work
Every calculator shows its formulas — every step, every clause cited. No black boxes.
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.
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.
Three steps. Zero friction.
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Choose from beam analysis, load calculators, section tools and more.
Enter your data
Switch between design standards and SI/Imperial units instantly.
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Live diagrams, formulas shown, ready to export or hand off.
Built by an engineer, not a company.
Enginus is built and maintained by Fayez Balhas, a structural engineer — not a team, not a startup. The calculators here run the same formulas and code checks used in real reinforced-concrete design and review work.
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