Concrete Beam Calculator Concrete Beam Calculator Simply supported / cantilever • Concrete, rebar, deflection, cost Units Metric (m, kN, m³, kg) Imperial (ft, kips, ft³, lb) Beam Type Simply Supported Cantilever Concrete Grade (e.g. C25) Span (L) Beam Width (b) Beam Depth (h) Dead Load (kPa / psf) Live Load (kPa / psf) Concrete cost ($/m³) Rebar unit cost ($/kg) Cover to reinforcement (m) Main bar diameter (mm) 8 10 12 16 20 Calculate Reset Export CSV Print / Save PDF Results Summary of computed values Created: Disclaimer: Estimation only — consult a structural engineer for design. Maximum Bending Moment Maximum Shear Estimated Deflection Concrete volume Rebar weight Rebar count (approx) Total estimated cost Beam Preview