Young's modulus is named after the 19th-century British scientist Thomas Young. It defines the relationship between stress and strain in a material. Stress is defined as force per unit area and strain is a dimensionless proportional deformation. Ratio of stress and strain is definede as the young's modulus. Here is the young's modulus formula to calculate the Young Modulus of elasticity, stress and strain alternatively from the other known given values.

Where,

Y = Youngs Modulus,

S = Stress,

St = Strain.