Stress-Strain Calculator
Calculate stress, strain, and Young's modulus with material database
How to use Stress-Strain Calculator
- 1Enter the applied force and the original cross-sectional area to compute stress.
- 2Enter the change in length and original length to compute strain.
- 3Review stress, strain, and Young's modulus if both stress and strain are provided.
Stress, strain, and Young's modulus
Stress = force / area; Strain = change_in_length / original_length; E = stress / strainStress is the internal force distributed over a cross-section, measured in pascals or psi.
Strain is the deformation per unit length; it is dimensionless because it is a ratio of lengths.
Young's modulus is the slope of the elastic region and describes how stiff a material is under tension or compression.
Frequently asked questions
What units should I use?
Use consistent units: newtons with square meters give pascals; pounds with square inches give psi.
Can strain be greater than 1?
Yes, but most engineering materials are designed to stay well below 1 in the elastic range.
Is Young's modulus the same in tension and compression?
For many materials it is approximately the same, but brittle materials can behave differently in compression.
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