How it works
Change in length ΔL = original length × linear expansion coefficient × temperature change.
Input definitions
- Original length (m)
- Enter the value in the labeled unit.
- Expansion coefficient (1/K)
- Enter the value in the labeled unit.
- Temperature change (K)
- Enter the value in the labeled unit.
A worked example
- Original length (m)
- 2
- Expansion coefficient (1/K)
- 0.000012
- Temperature change (K)
- 100
Assumptions & limits
Ideal educational model in the stated SI units. Real equipment, structural design and safety decisions need appropriate professional analysis; losses are excluded unless entered.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-18. Content checked against the stated method and examples. Our verification approach.
Common questions
Why is the expansion coefficient small?
Its unit is per kelvin, often reported in millionths per kelvin. Enter 0.000012 for 12 × 10⁻⁶/K.
How does Linear thermal expansion work?
Change in length ΔL = original length × linear expansion coefficient × temperature change.
What should I check before using Linear thermal expansion?
Ideal educational model in the stated SI units. Real equipment, structural design and safety decisions need appropriate professional analysis; losses are excluded unless entered.