Use this free AS 3600 shrinkage calculator to estimate the design shrinkage strain of concrete. The calculator helps engineers, designers, researchers, and students calculate autogenous shrinkage, drying shrinkage, hypothetical thickness t_h, shrinkage coefficient k₁, and the total design shrinkage strain according to the AS 3600 equations. It also provides the typical final design shrinkage strain after 30 years based on Table 3.1.7.2. According to the code extract, the design shrinkage strain is taken as the sum of autogenous shrinkage strain and drying shrinkage strain.