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Beam Load Calculator

Use our free Beam Load Calculator to calculate beam load, reactions, bending moment, and shear force easily with accurate engineering formulas.

A beam load calculator helps you find how much load a beam can carry and how that load affects the beam. It is one of the most important tools in structural and civil engineering. Beams are used in houses, bridges, buildings, and many other structures. If the beam load is not calculated correctly, the structure can fail.

We developed this Beam Load Calculator to make beam load calculations simple for everyone. You do not need advanced engineering knowledge. You only need basic values like beam length and load. The calculator instantly gives you accurate results using standard engineering formulas.

This tool is useful for students, engineers, contractors, and anyone learning structural basics.

What Is Beam Load?

Beam load is the force applied on a beam. This force can act along the entire length of the beam or at a single point. The load creates bending, shear force, and reactions at the supports. Calculating beam load helps you understand how safe and strong a beam is.

Beam loads are mainly of two types. One is a uniformly distributed load, also called UDL. The other is a point load applied at a specific location.

How Do You Calculate Beam Load?

Beam load is calculated using classical beam theory. The calculation depends on the beam type and the load type. The most common beam types are simply supported beams and cantilever beams.

To calculate beam load, engineers first convert all values into standard units. Then they apply proven formulas to find reactions, bending moment, and shear force.

Our Beam Load Calculator does all these steps automatically.

Beam Load Formula

Simply Supported Beam with Uniformly Distributed Load

  • Reaction at support A is equal to w × L divided by 2.
  • Reaction at support B is equal to w × L divided by 2.
  • Maximum bending moment is equal to w × L × L divided by 8.
  • Maximum shear force is equal to w × L divided by 2.

Here, w is the load per unit length and L is the beam span.

Simply Supported Beam with Central Point Load

  • Reaction at support A is equal to P divided by 2.
  • Reaction at support B is equal to P divided by 2.
  • Maximum bending moment is equal to P × L divided by 4.
  • Maximum shear force is equal to P divided by 2.

Here, P is the point load and L is the beam length.

Cantilever Beam with Uniformly Distributed Load

  • Reaction at the fixed support is equal to w × L.
  • Maximum bending moment is equal to w × L × L divided by 2.
  • Maximum shear force is equal to w × L.

Cantilever Beam with Point Load at Free End

  • Reaction at the fixed support is equal to P.
  • Maximum bending moment is equal to P × L.
  • Maximum shear force is equal to P.

These are standard formulas used worldwide in structural engineering.

How to Use Online Beam Load Calculator

  1. First, select the beam type. You can choose a simply supported beam or a cantilever beam.
  2. Next, select the load type. Choose uniform load if the load is spread along the beam. Choose point load if the load acts at one point.
  3. After that, enter the beam length and select the correct length unit.
  4. Now enter the load value and choose the load unit.
  5. Click the calculate button. The calculator instantly converts units and applies the correct beam load formula.

You will see reactions at supports, maximum bending moment, and maximum shear force with clear steps.

Example Beam Load Calculation

Let us take a simple example.

A simply supported beam has a length of 4 meters. A uniform load of 10 kN per meter acts on the beam.

First, multiply the load by the beam length.

w × L = 10 × 4 = 40 kN.

Reaction at each support is 40 divided by 2.

Reaction at A = 20 kN.

Reaction at B = 20 kN.

Maximum bending moment is w × L × L divided by 8.

10 × 4 × 4 divided by 8 = 20 kN·m.

Maximum shear force is w × L divided by 2.

10 × 4 divided by 2 = 20 kN.

Our Beam Load Calculator gives the same result instantly.

Why Use Our Beam Load Calculator?

This calculator uses correct engineering formulas. It converts units automatically. It shows step-by-step results. It saves time and reduces human error. It works for both students and professionals.

You can calculate beam load anytime without manual effort.

Final Verdict

The Beam Load Calculator is a simple and powerful tool for understanding beam behavior. It helps you calculate reactions, bending moment, and shear force accurately. If you want fast and reliable beam load calculations, this tool is the perfect solution.

Use it to learn, practice, or verify your beam load calculations with confidence.

FAQs

What is a beam load calculator?

A beam load calculator is an online tool that calculates reactions, bending moment, and shear force for different beam types and loads.

Is this beam load calculator accurate?

Yes. It uses standard structural engineering formulas used in textbooks and professional practice.

Can beginners use this calculator?

Yes. The calculator is designed for easy use and does not require advanced engineering knowledge.

What units does the beam load calculator support?

The calculator supports multiple length and load units and converts them automatically.

Is this tool suitable for real construction?

It is suitable for learning and preliminary analysis. Final structural design should always be checked by a qualified engineer.