Thermal Expansion Calculator
Calculate how much a material lengthens or shrinks with temperature using linear thermal expansion: ΔL = α × L₀ × ΔT.
- In millimeters
- 6.000 mm
Formula: ΔL = α × L₀ × ΔT
About Thermal Expansion Calculator
Thermal Expansion Calculator is a free online calculator that gives you an instant, accurate result as you type. Calculate how much a material lengthens or shrinks with temperature using linear thermal expansion: ΔL = α × L₀ × ΔT.
The calculation uses the standard formula ΔL = α × L₀ × ΔT and updates live with every change to the inputs. Everything runs client-side in your browser — fast, private, and free to use as often as you like.
The Eiffel Tower grows about 15 cm taller on hot summer days because of the thermal expansion of its iron structure.
Frequently Asked Questions
Is Thermal Expansion Calculator free to use?
Yes. Thermal Expansion Calculator is completely free, with no sign-up, no downloads, and no usage limits. You can use it as many times as you like on any device with a web browser.
How accurate is this calculator?
The calculator applies the standard formula (ΔL = α × L₀ × ΔT) with full floating-point precision and rounds only the displayed result. For most practical purposes the results are exact.
What are typical expansion coefficients?
Per °C in units of 10⁻⁶: steel ≈ 12, aluminum ≈ 23, copper ≈ 17, concrete ≈ 12, glass ≈ 8.5. Enter the value in ×10⁻⁶/°C.
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