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Thermal Expansion Calculator
Find how much a solid rod lengthens when heated, or the original length behind a measured expansion of the rod after warming.
ΔL = α × L₀ × ΔT
A solid expands in proportion to its original length, its expansion coefficient and the temperature rise.
Length change
— m
The calculation runs entirely in your browser — no data leaves your device. Change any number and the answer updates instantly.