About the Beam Reaction Calculator Online Free Tool

The Beam Reaction Calculator Online Free Tool estimates support reactions for a simply supported beam with a uniform distributed load and one point load. It is useful for early structural checks, classroom problems, and quick comparison calculations.

How to Use the Beam Reaction Calculator Online

1. Enter the required inputs in the fields above using the units shown on the labels.
2. Select any mode, shape, or method options so the calculation matches your scenario.
3. Run the calculation and review the result summary in the output panel.
4. Check the units, assumptions, and project requirements before using the result outside preliminary review.

Choosing Options Correctly

Enter span in meters, UDL in kN/m, point load in kN, and the point-load location from the left support. The point load must fall within the span.

Common Use Cases

• Estimate left and right reactions for a simple span.
• Check an approximate maximum sagging moment from combined loads.
• Validate hand calculations before moving to a full structural model.

Quick FAQ

Does this handle fixed ends or cantilevers?
No. It is for simple support reaction checks based on the supported load case in the tool.

Can I use the output for final design?
No. Use it for preliminary checks and verify with structural analysis and applicable codes.

Which units should I use?
Keep load and length units consistent. The reaction units follow the load unit you enter.

What is a common input mistake?
Putting a load outside the beam span or mixing point-load position units with beam length units will make the result meaningless.