Calculate fixed-end reaction, shear, bending moment, tip deflection, allowable deflection, and span ratio for a cantilever beam. Use this calculator for balcony beams, overhangs, brackets, canopies, projecting beams, shelves, and preliminary structural planning.
End point load:
The calculator estimates fixed-end reaction, fixed-end moment, and tip deflection for a load applied at the free end.
Uniform load:
The calculator estimates total distributed load, fixed-end shear, fixed-end moment, and tip deflection for a load spread across the cantilever length.
Combined load:
The calculator adds end point load effects and uniform load effects together for a basic combined cantilever result.
Deflection check:
The calculator compares estimated tip deflection to the selected span-based limit, such as L/240 or L/360.
A cantilever beam calculator helps estimate the forces and movement in a projecting beam before choosing a beam size or reviewing a support detail.
It can help compare fixed-end reaction, shear, bending moment, total load, tip deflection, allowable deflection, and span ratio for preliminary structural planning.
Your result shows estimated total load, fixed-end reaction, maximum shear, fixed-end bending moment, tip deflection, allowable deflection, and span ratio. These values are simplified estimates and do not replace structural design.
A cantilever beam is fixed or restrained at one end and projects outward with the other end unsupported. Common examples include overhangs, balconies, brackets, canopies, and projecting beams.
For common cantilever load cases, maximum bending moment occurs at the fixed support because that support resists the beam rotation and load effect.
Cantilevers can feel flexible because the free end moves more than a typical simply supported beam. Tip deflection is often an important serviceability check.
No. This calculator estimates basic cantilever forces and deflection. Final sizing depends on material, grade, section properties, shear, bending, deflection, bearing, anchorage, connections, bracing, code requirements, and professional review.