Identify the stress and strain values
Calculate stress using the formula: stress = force / cross-sectional area
Calculate strain using the formula: strain = change in length / original length
Divide stress by strain
Use the formula: modulus of elasticity = stress / strain
Express the result in Pascals or appropriate units
For a stress-strain graph, find the slope of the linear elastic region
Use the formula: modulus of elasticity = change in stress / change in strain