Elongation Calculator
Find how much a bar stretches under tension.
A material stretches in proportion to load and length, and inversely to area and stiffness.
The math behind it
ΔL = F·L ÷ (A·E), from Hooke's law combined with stress and strain definitions.
Worked example
10 kN on a 2 m steel bar (100 mm², 200 GPa) → 1 mm.
FAQ
What if it stretches too far?
Beyond the yield point it deforms permanently.