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Thermal Expansion Calculators

When an object is heated or cooled, its length changes by an amount proportional to the original length and the change in temperature.

The linear thermal expansion, the change in length of an object can be expressed with the formula below, or you can simply use the calculator provided here.

The formula:

dl = L0 α (t1 – t0)                      
where
dl = change in object length (m, inches)

L0 = initial length of object (m, inches)
α =  linear expansion coefficient (m/moC, in/inoF) 
t0 = initial temperature (oC, oF)
t1 = final temperature (oC, oF)

The final length of the object can be calculated as
L1 = L0 + dl
= L0 + L0 α (t1 – t0)                                
where
L1 = final length of object (m, inches)

Note! – linear expansion coefficients for most materials varies with temperature.

U-Bends (Expansion loop)​

* Calculators and other tools in this website are intended for information purposes only. Any reliance placed on the content of the website is to be made at your own risk. 
We do not take liability for any loss or damage arising out of, or in connection with the use of any tools available on this website. 

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