Thermal Expansion Calculator
Length change with temperature.
Enter your values
Results update instantly as you type — no submit needed.
Results
- Length change
- 5.04 mm
- New length
- 12.00504 m
- Strain
- 4.200e-4
- Expansion gap advised
- 7.6 mm
Quick answer
Linear expansion equals the coefficient times original length times temperature change.
ΔL = α × L × ΔT
How to use the Thermal Expansion Calculator
- 1Enter the original length.
- 2Pick the material.
- 3Enter the temperature swing it will experience.
Frequently asked questions
Why leave an expansion gap?
Restrained expansion generates huge forces and cracks structures.
Does it work for cooling?
Yes — enter a negative temperature change.