Concrete Column Calculator Concrete Column Calculator Rectangular & Circular columns • Concrete volume, rebar, stress, cost estimate Units Metric (m, kN, m³, kg) Imperial (ft, kips, ft³, lb) Column Shape Rectangular Circular Concrete Grade (e.g., C25) Axial Load (N) kN Moment (Mx) Moment (My) Column Height (H) Width (b) Depth (h) Diameter (d) Cover to reinforcement Preferred main bar diameter (mm) 8 10 12 16 20 Concrete unit cost Rebar unit cost (per kg) Calculate Reset Export CSV Print / Save PDF Results Summary of computed values and checks Created: Disclaimer: Estimation only — consult a structural engineer. Concrete volume (V) Estimated rebar weight Estimated rebar count Axial stress Estimated total cost
