�️Civil Engineering Calculators

Beams, drainage, foundations, retaining walls. 13 free tools — transparent formulas and quick results.

Beam Deflection

Concrete Mix Design

Hazen-Williams Pipe Flow

Retaining Wall Stability

Footing Bearing Capacity

Storm Drain Sizing

Earthwork Cut & Fill Volume

Slope Stability

Seismic Response Spectrum

RC Beam Design (ACI 318 / EC2)

Wind Load Calculator (ASCE 7 / EC1)

Open Channel Flow (Manning's)

Soil Consolidation (Terzaghi)