Thermal Expansion Calculator
Works out how much things grow when they warm up.
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The formula
ΔL = α L ΔT ΔV = β V ΔT, with β ≈ 3α for a solid
α is the linear coefficient and β the volume one. Enter α for a solid, or β for a liquid.
What to watch out for
It is why bridges have expansion joints, and why heating systems need an expansion vessel.
Frequently Asked Questions
How much does 10 m of steel grow over a 40 °C rise?
4.8 mm.
How much does 50 L of petrol expand over 20 °C?
About 0.95 L.