Shelf Sag Calculator

Calculate shelf sag and deflection for various materials and loading conditions

Shelf Parameters
Enter shelf dimensions, material, and loading conditions
About this calculator

Shelf Sag Calculator: A deflection estimator for checking shelf stiffness and load behavior.

How it works

  • Enter span, material, thickness, and load assumptions.
  • Select support conditions and geometry details.
  • The tool computes deflection and practical pass/fail guidance.