Correlations between compression index and Atterberg limits found in the literature are significant for preliminary estimation. These equations are usually interpreted based on the R-square parameter and classified according to the conditions of the data (disturbed, undisturbed, remolded,
etc.). Although correlations reliable enough to eliminate oedometer tests are not yet fully available, these correlations can be helpful in local calculations. In this study, correlations obtained from studies conducted after 2000 on the relationship of compression index and consolidation coefficient with Atterberg limits and water content are mentioned and clearly shown. While the compression index equations are pretty high in the literature, the equations produced with the consolidation coefficient are less in number due to the time-consuming
consolidation calculations. Using 105 data from research in the literature, two equations were formed between the compression index, liquid limit, and plasticity index. This study does not propose new equations; only relationships are generated using the Linear Regression method with data obtained from independent studies based on the belief that the compression index has a stronger relationship with the liquid limit and plasticity index.