Free Online Beam Calculator
Analyse beams instantly with our free structural analysis tool. Get shear force diagrams, bending moment diagrams, and deflection results in seconds—no signup or download required.
Visualise bending moment, shear force, and deflection diagrams instantly
What Can You Calculate?
Our beam calculator handles all common beam configurations that structural engineers encounter daily. Whether you're checking a simple residential beam or analysing a complex continuous span, AutoCalcs delivers accurate results instantly.
Beam Types
- Simply supported beams
- Cantilever beams
- Continuous beams
- Propped cantilevers
Load Types
- Point loads
- Distributed loads (UDL)
- Applied moments
- Multiple load combinations
Results
- Shear force diagrams
- Bending moment diagrams
- Deflection curves
- Support reactions
Features
- Real section library
- Material database
- Unit conversion
- Save & share projects
How It Works
AutoCalcs uses the Direct Stiffness Method (finite element analysis) to solve your beam problems. This means you get accurate results for any configuration—not just the simple cases covered by textbook formulas.
- Create nodes — Define the points along your beam
- Add members — Connect nodes with beam elements
- Apply supports — Pin, roller, or fixed supports
- Add loads — Point loads, distributed loads, moments
- Run analysis — Get instant results with diagrams
Why Choose AutoCalcs?
Most online beam calculators are limited to simple cases or require you to sign up before showing results. AutoCalcs is different:
- Free to use — Full analysis capabilities at no cost
- No signup required — Start calculating immediately
- Beyond 1D formulas — Model beams within full 3D structures
- Professional accuracy — FEA-based solver, not simplified formulas
- Access anywhere — Not tied to one computer, just open the web app