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Free thermal expansion calculator for estimating linear size changes in materials due to temperature variation. Compute DeltaL, final length, and thermal strain instantly.
Last updated: April 20, 2026
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Length change DeltaL
0.003000 m
Final length
2.503000 m
Thermal strain epsilon = DeltaL / L0
0.00120000
Interpretation
Length change is 0.003000 m for DeltaT = 100.000°. Final length is 2.503000 m.
Formula:
DeltaL = alpha × L0 × DeltaT
Formula
DeltaL = alpha L0 DeltaT
Relation
Lfinal = L0 + DeltaL
Metric
epsilon = DeltaL / L0
L0=2.5 m, alpha=12×10⁻⁶ /K, T: 20 to 120
Length change
0.003000 m
Final length
2.503000 m
The calculator applies the linear thermal expansion relation for solids over moderate temperature intervals. It computes direct length change and gives normalized strain for tolerance-aware design interpretation.
DeltaL = alpha × L0 × DeltaTLfinal = L0 + DeltaLepsilon = DeltaL / L0Coefficients are treated as constant in this model; advanced high-precision work may require temperature-dependent properties.
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