Slovenia is characterised by rainfall events of high intensity and short duration, which puts it among areas with high rainfall erosivity values in Europe. This Master's thesis focuses on the current state in rainfall erosivity and soil erosion connected to it. Types of erosion, the physical forms and factors of soil erosion are presented, with in-depth analysis of one of its main characteristics – the rainfall erosivity factor R. Using various tools (R, RIST, Orange and SAGA), calculations and analyses were performed for selected pluviographic stations across Slovenia. R-factor was determined by year, month and in accordance with various equations of different authors (Brown and Foster, van Dijk, Petan), after which comparisons were drawn and results analysed. Determining the sensitivity of input model parameters and their effect on model output R-factor values was one of the goals of the study. This was achieved using sensitivity analysis tools – Normalized Sensitivity Index and Standardized Regression Coefficient. Using annual values of R-factor, a trend analysis was performed, using Mann-Kendall test, after which different samples were compared according to the Mann-Whitney test. The results were evaluated in comparison to similar studies and literature. The seasonality of R-factor for the selected pluviographic stations was analysed, along with the classification according to seasonality traits. For a selected area, the calculation of soil erosion was presented, according to the RUSLE method. The change in input parameters of RUSLE equation (R, K, LS, C, P) were analysed and their impact on soil erosion values evaluated.