Welcome to our free online bending moment and shear force diagram calculator which can generate the Reactions, Shear Force Diagrams (SFD) and Bending Moment Diagrams (BMD) of a cantilever or simply supported beam. Use this beam span calculator to determine the reactions at the supports, draw the shear and moment diagrams for the beam and calculate the deflection of a steel or wood beam. This is the free version of our full SkyCiv Beam Software. This can be accessed under one of our Paid Accounts, which also includes a full structural analysis software.

### About the Beam Calculator

Use the interactive box above to view and delete the beam length, supports and added loads. Any changes made will automatically re-draw the free body diagram any simply supported or cantilever beam. The beam reaction calculator and Bending Moment Calculations will be run once the "Solve" button is hit and will automatically generate the Shear and Bending Moment Diagrams. You can also click the individual elements of this LVL beam calculator to edit the model.

#### Beam Reaction Calculator

The beam span calculator will easily calculate the reactions at supports. It is able to calculate the reactions at supports for cantilever or simply supported beams. This includes calculating the reactions for a cantilever beam, which has a bending moment reaction as well as x,y reaction forces.

#### Bending Moment Shear Force Calculator

The above steel beam span calculator is a versatile structural engineering tool used to calculate the bending moment in an aluminium, wood or steel beam. It can also be used as a beam load capacity calculator by using it as a bending stress or shear stress calculator. It is able to accommodate up to 2 different concentrated point loads, 2 distributed loads and 2 moments. The distributed loads can be arranged so that they are uniformly distributed loads (UDL), triangular distributed loads or trapezoidal distributed loads. All loads and moments can be of both upwards or downward direction in magnitude, which should be able to account for most common beam analysis situations. Bending Moment and Shear Force calculations may take up to 10 seconds to appear and please note you will be directed to a new page with the reactions, shear force diagram and bending moment diagram of the beam.

#### Beam Deflection Calculator

One of the most powerful functions is using it as a beam deflection calculator (or beam displacement calculator). This can be used to observe the calculated deflection of a simply supported beam or of a cantilever beam. Being able to add section shapes and materials, this makes it useful as a wood beam calculator or as a steel beam calculator for lvl beam or i beam design. For now, this functionality is available in SkyCiv Beam.

### Need More Functionality?

SkyCiv offers a Student account, offering the SkyCiv Beam Software - allowing you to solve with supports and forces. SkyCiv also offers a full 3D Structural Analysis Software in the cloud, complete with professional reporting, 3D Rendering and Stress Analysis. If you have any questions with the account types, simply contact us.

### More Free Tools Available

Here at SkyCiv, we continue to deliver valuable tools and resources that will aid in the work of structural engineers. We have a long list of other free and easy to use tools for you to check out. Check out our free design section reference for obtaining the geometric properties of standard steel or aluminum sections. You can also check out our free truss calculator for quick analysis of 2D trusses. For small 2D frames, you can check out our free structural frame calculator. For typical shapes of non-standard sizes, the free moment of inertia calculator is a good resource to obtaining their geometric properties.

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