Construction calculators » Beam Deflection Calculation

Online Beam Deflection Calculation

Material:
Scheme:
Load
Diameter d mm
Span L mm
Load q kg/m
Scheme:
Load
Diameter d mm
Wall thickness t mm
Span L mm
Load q kg/m
Scheme:
Load
Height h mm
Wall thickness t mm
Flange width b mm
Flange thickness h1 mm
Span L mm
Load q kg/m
Scheme:
Load
Height h mm
Wall thickness s mm
Flange thickness t mm
Flange width b mm
Span L mm
Load q kg/m
Scheme:
Load
Flange width a mm
Flange width b mm
Flange thickness t mm
Span L mm
Load q kg/m
Scheme:
Load
Height h mm
Thickness t mm
Span L mm
Load q kg/m
Scheme:
Load
Height h mm
Flange width b mm
Wall thickness t mm
Flange thickness h1 mm
Span L mm
Load q kg/m
Scheme:
Load
Height h mm
Width b mm
Wall thickness t mm
Span L mm
Load q kg/m


We present to you an online deflection calculator for beams. This tool allows you to quickly and accurately calculate the deflection of wooden or metal beams under various loads and support conditions.

To use the calculator, follow these steps:

  1. Select the beam's cross-sectional shape:
    • Circle;
    • Pipe;
    • I-beam;
    • Channel;
    • Angle;
    • Rectangle;
    • Square;
    • Hollow profile pipe.
  2. Select the beam material:
    • Wood;
    • Steel;
    • Reinforced concrete;
    • Aluminum;
    • Copper;
    • Glass.
    Or, you can input your own values for the material's modulus of elasticity and density.
  3. Select the beam's support conditions:
    • Pin-pin;
    • Fixed-pin;
    • Fixed-fixed;
    • Fixed-free end.
  4. Select the type of load:
    • Uniformly distributed load along the beam;
    • Point load.
  5. Specify the beam's geometric dimensions, referring to the provided diagrams.
  6. Input the load value (if necessary, you can calculate the load online here).

After entering all the data, the calculator will compute the beam deflection online and display the results. You will be able to determine the deflection value and compare it with the allowable limit for the given span length. This will help you decide on the optimal beam cross-section. To reduce deflection, it is recommended to increase the height of the beam's cross-section.

Additionally, by clicking the "More Details" button, you will get the following information about the beam:

  • Cross-sectional area;
  • Beam weight;
  • Distributed load due to self-weight;
  • Moment of inertia of the section.

It is important to note that the program automatically accounts for the beam's self-weight in the calculation.

After calculating deflection, it is recommended to check the beam for strength here.

If this calculator has been useful to you, please share it with your colleagues and friends.

Latest updates:

  • Added calculation of maximum allowable beam deflection;
  • Implemented point load input;
  • Fixed graphical errors in the display of channel sections;
  • Added calculation for T-section;
  • Improved display for rectangular sections;
  • Added the ability to rotate channel sections;
  • Implemented user input for material modulus of elasticity and density;
  • Fixed the display of web and flange thickness for channel sections.