Beam Deflection Calculator

Calculate deflection, bending moment, and shear force diagrams for various beam types and load conditions — free structural engineering tool

Support Condition

Simply SupportedCantileverFixed-Fixed

Load Condition

Center Point LoadArbitrary Point LoadUniform Load

Section Presets

Input Parameters

Span L (mm)

Uniform load w (kN/m)

Young's modulus E (N/mm²)

Moment of inertia I (cm⁴)

δ = 5wL⁴ / (384EI)

M = wL² / 8

V = wL / 2

Results

Max Deflection

3.473 mm

Span/Deflection Ratio

L/1727

Max Bending Moment

45.00 kN·m

Max Shear Force

30.00 kN

Deflection Limit Check

L/250

24.00 mm

L/300

20.00 mm

L/500

12.00 mm