Beam Deflection Calculator

Closed-form peak deflections for four textbook cases (mid-span load on SS, UDL on SS, tip load on cantilever, UDL on cantilever). Requires E and I; does not model shear deformation, cracking, creep, or code checks.

Free · No limits · Runs in your browser

How to use

  1. 1Select boundary condition and load pattern.
  2. 2Enter span L, Young's modulus E, and second moment I in consistent SI units.
  3. 3Enter point load P (N) or distributed w (N/m) as prompted.
  4. 4Read peak deflection in meters.

Frequently asked questions

Is this Eurocode or AISC checking?
No. It applies textbook elastic formulas only.
Why no shear deflection?
Long slender beam idealizations omit shear deformation; deep or short spans may need richer models.

Engineering: Discipline-based calculators for fluids, electrical, HVAC, structures, and more — browser-first, with clear assumptions.

Loading...