En Thermal Expansion Calculator is a practical engineering tool designed to calculate dimensional changes in materials caused by temperature variations. By entering the original dimension, temperature change, and coefficient of thermal expansion, users can quickly estimate thermal expansion, contraction, final length, and thermal strain. The Thermal Expansion Calculator is useful for mechanical design, piping systems, shafts, bearings, structural components, precision assemblies, and material comparison where temperature-related dimensional changes must be considered.
Calculation Inputs
Preset values are approximate and editable.
Advanced: Temperature-Dependent Coefficient
Enter α values at temperature breakpoints (°C). ΔL = L₀ × Σ(αᵢ × ΔTᵢ)
°C
Component 1 (e.g., Shaft)
×10⁻⁶/°C
Component 2 (e.g., Housing)
×10⁻⁶/°C
Temperature
Compare Materials (2–6)
Optional: Restrained Thermal Stress
σthermal = E × α × ΔT (fully restrained, linear elasticity)
