Beam Deflection Calculator
Result
Beam Deflection Calculator Estimate the maximum deflection of a simply supported beam carrying a single point load at midspan. Enter the load, span, the material's Young's modulus and the section's moment of inertia, and the calculator returns the maximum — free online calculator.
Formula
- Beam Deflection Calculator calculates its result from Load, Span length, Elastic modulus, Second moment of area. It uses the formula P*L^3/(48*E*I). Change any input to recalculate the result instantly.
- The main inputs are Load, Span length, Elastic modulus, Second moment of area. Enter them in the units and format shown in the calculator.
- Keep measurements and project assumptions consistent before comparing or combining values.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Beam Deflection
- Load: 1000
- Span length: 2
- Elastic modulus: 200000000000
- Second moment of area: 1.0E-6
With P = 1,000 N, L = 2 m, E = 200,000,000,000 Pa, and I = 0.000001 m^4, deflection = 0.0008333333 m under the specified beam/load assumptions.
Sample result: Calculating…
Frequently asked questions
What does the Beam Deflection calculate?
Beam Deflection Calculator Estimate the maximum deflection of a simply supported beam carrying a single point load at midspan. Enter the load, span, the material's Young's modulus and the section's moment of inertia, and the calculator returns the maximum — free online calculator.
Which values should I enter?
Enter Load, Span length, Elastic modulus, Second moment of area using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: P*L^3/(48*E*I).
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.