In this research, genetic algorithm was implemented to estimate parameters in generalized Richards model by adjusting COVID-19 case data in Indonesia.Data collected were the daily new cases and cumulative number of COVID-19 case in Indonesia from early March to early June 2020, that was reported bydataboks.katadata.co.id. The best pair of parameters was selected based on the lowest cost function value, determined from the distance between data withestimated model and real data. Next, model with estimated parameters is used to predict new cases and cumulative cases for upcoming days. Numericalsimulations were carried out so that the peaks and ends of the COVID-19 pandemic can be seen easily.

Keywords:Parameters Estimation; Generalized Richards Model,; COVID-19; Genetic Algorithm