Thermal Expansion Calculator
Calculate linear thermal expansion: ΔL = α × L × ΔT. Select a material preset or enter a custom coefficient.
Parameters
Expansion (ΔL)
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New Length
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Strain (ε)
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Expansion %
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ΔL = α × L × ΔT
How this was calculated
Linear expansion: ΔL = α × L × ΔT. The coefficient α is in μin/in/°F (= μft/ft/°F). If ΔT is in °C, it is converted to °F by multiplying by 1.8.
Strain: ε = ΔL / L = α × ΔT. This is dimensionless and represents fractional length change.
Need help with piping stress analysis, expansion loop design, or thermal management?
Book a free strategy call →Understanding Thermal Expansion in Engineering
Thermal expansion is the tendency of materials to change in length as temperature changes. For pipelines, wellbore tubulars, and structural members, uncontrolled thermal expansion causes buckling, excessive stress, seal failures, and equipment damage. Engineers use expansion loops, bellows joints, and sliding supports to accommodate thermal growth. The linear coefficient of thermal expansion (α) varies significantly by material: PVC expands nearly 5 times more than carbon steel for the same temperature change. Built by Groundwork Analytics.