Material properties calculator

Poisson's Ratio Calculator

Measure lateral contraction relative to axial extension.

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Calculator

Enter material values

Select units beside each input. Results update automatically as soon as enough values are entered.

Materials

Axial strain strain
Transverse strain strain

Result

About this calculator

How it works

Poisson ratio describes lateral strain response when a material is loaded axially.

Formulas

Formulas used

Poisson ratio

nu = - transverse strain / axial strain

Worked example

Example calculation

Poisson ratio

nu = -(-0.0006) / 0.002 = 0.30

Guide

How to use this calculator

Enter the measured material, load, geometry, strain, or thermal values requested by the calculator.
Select the units beside each input where a unit menu is shown.
Use the highlighted result for the main property, then review the supporting values for context.

Reference

What the results mean

Poisson ratio

Ratio of lateral strain to axial strain.

Lateral strain

Sideways contraction or expansion caused by axial loading.

Assumptions and limits

Before using the result

Inputs are treated as representative engineering values from a test, datasheet, or early design estimate.
Material properties vary with grade, heat treatment, temperature, strain rate, moisture, manufacturing route, and test method.
Use verified material data, applicable standards, safety factors, and qualified engineering judgement for final design or failure analysis.

FAQ

Poisson's Ratio Calculator questions

Can I use different units?

Yes. Select the unit beside each input. Values are converted internally before the calculation is performed.

Are these material results suitable for final design?

Use these results for education, screening, and early design checks. Final work should use verified test data, relevant standards, safety factors, and project-specific conditions.

Why can material property values vary?

Material properties depend on alloy, grade, heat treatment, temperature, test method, manufacturing route, and data source.