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Linear Thermal Expansion: Length expansion magnitude Calculator

Linear Thermal Expansion: Calculate length expansion magnitude from Linear expansion coefficient, Length, Temperature difference magnitude. Check the formula, input units and worked result on this page.

Enter your values

K⁻¹
Formula symbol: α. Required unit: K⁻¹. Must be greater than zero.
m
Formula symbol: L. Required unit: m. Must be greater than zero.
K
Formula symbol: ΔT. Required unit: K. Must be greater than zero.

Use a decimal point, without thousands separators.

This model uses positive magnitudes. Use initial length and the small-expansion approximation. Coefficient is constant over the interval; only positive expansion is solved.
Example result
Length expansion magnitude
0.00253125 m

The initial result uses the example values. Enter your own values and calculate again.

Edit inputs

How it works

Use linear thermal expansion with the units stated beside the fields. This form solves for length expansion magnitude; enter the known quantities in Linear expansion coefficient, Length, Temperature difference magnitude.

Inputs and units
Linear Thermal Expansion: Length expansion magnitude Calculator · Inputs and units
InputExample valueWhat to enter
Linear expansion coefficient0.000015000000000000002 K⁻¹Formula symbol: α. Required unit: K⁻¹. Must be greater than zero.
Length2.25 mFormula symbol: L. Required unit: m. Must be greater than zero.
Temperature difference magnitude75 KFormula symbol: ΔT. Required unit: K. Must be greater than zero.
ΔL = (1 × α × L × ΔT)

Worked example

Show example inputs and results

This example is generated by the same calculation engine using the starting values in the form. Your own inputs produce your own result.

Linear expansion coefficient
0.000015000000000000002 K⁻¹
Length
2.25 m
Temperature difference magnitude
75 K

Complete example results

Length expansion magnitude
0.00253125 m

Reading the result

The result solves for length expansion magnitude from the entered quantities. Check the result unit and the formula conditions before using it.

Questions and answers

Can I use the example values for my own calculation?

The example values illustrate the calculation. Replace every input with your own information, especially dates, rates and the selected operation.

When can I use the length expansion magnitude result?

This model uses positive magnitudes. Use initial length and the small-expansion approximation. Coefficient is constant over the interval; only positive expansion is solved.

Why are some results rounded?

Results display up to 8 decimal places. Calculations use the unrounded values; very small values use scientific notation. JavaScript floating-point arithmetic can introduce tiny rounding differences.

Are my inputs sent to a server?

The calculator processes inputs in your browser. Its code does not send your values to a server.

Method sources: openstax.org

Methods & accuracy

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