This Thermal Expansion Calculator allows you to easily calculate how much a material expands or contracts when its temperature changes. Simply enter the original length of the object, the coefficient of linear expansion (α) specific to the material, and the temperature change (ΔT). The calculator uses the formula ΔL = L₀ × α × ΔT to determine the change in length. This is especially useful in physics, engineering, and construction to predict dimensional changes in materials due to heating or cooling.