SkyCiv Frame Calculator is a free, cloud-based structural analysis tool designed to calculate bending moment diagrams, shear force diagrams, and support reactions for 2D frame structures. It is part of SkyCiv’s suite of structural engineering software and provides a simplified interface for quick analysis of small frame models. The free version supports up to three members with applied point loads and moments. Users can customize units and display settings, and view clean diagrams generated through finite element analysis (FEA). For more advanced capabilities, users can upgrade to SkyCiv Structural 3D, which supports unlimited members, materials, and integrated design codes.

Features

• Model Setup:
  • Input 2D frame structures with up to 3 members.
  • Apply point loads and moments.
  • Customize units and display settings.
• Analysis Outputs:
  • Bending Moment Diagrams (BMD).
  • Shear Force Diagrams (SFD).
  • Reaction forces at supports.
• Solver Technology:
  • Finite Element Analysis (FEA) engine.
  • Based on nodes and beam/column elements.
• User Interface:
  • Clean and intuitive layout.
  • Online access—no installation required.
• Upgrade Options:
  • SkyCiv Structural 3D for unlimited members and loads.
  • Material selection (wood, steel).
  • Save/load projects.
  • Integrated design codes: AISC, ACI, Eurocode, AS, CSA, NDS.

Benefits

• Accessibility: Free and fully online—no downloads needed.
• Speed: Quick setup and instant results.
• Accuracy: Reliable FEA-based calculations.
• Visualization: Clear diagrams for easy interpretation.
• Scalability: Upgrade for full structural modeling and design.
• Educational Value: Ideal for students and professionals learning frame analysis.