Simply Supported Beam Calculator

Calculate reactions, shear force, bending moment, and deflection for common simply supported beam load cases.

Inputs

Load Type

Beam Length (L)

Uniform Load (w)

kN/m

Point Load (P)

Load Position from Left Support (a)

Distance of First Load from Support (A)

Young's Modulus (E)

MPa

Moment of Inertia (I)

mm⁴

About This Calculator

This calculator covers common simply supported beam cases.

Included load types:

1. Uniformly distributed load

2. Point load at midspan

3. Point load at any position

4. Two equal point loads

Results

Reaction at A

30.00

Reaction at B

30.00

Maximum Moment

45.00

kN·m

Estimated Max Deflection

5.95

Diagrams

Shear Force Diagram (SFD)

Bending Moment Diagram (BMD)

Beam Loading Diagram

Engineering note: This calculator is for educational and preliminary calculation only. For real structural design, always check relevant standards and use professional engineering judgement.