Length change
Delta L = alpha L Delta T
Material properties calculator
Thermal Expansion Calculator
Estimate dimensional change caused by heating or cooling.
Calculator
Enter material values
Select units beside each input. Results update automatically as soon as enough values are entered.
Result
About this calculator
How it works
Linear thermal expansion estimates length change from temperature change using a material-specific coefficient.
Formulas
Formulas used
Final length
Lf = L + Delta L
Worked example
Example calculation
Length change
Delta L = 23e-6 x 2.0 x 40 = 0.00184 m
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
Length change
Dimensional growth or shrinkage from temperature change.
Final length
Original length plus calculated expansion.
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
Thermal Expansion 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.
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