Mangrove ecosystem is a very potential area, generally located in ecotone areas (a combination of intertidal and supratidal areas), where there is an interaction between waters (sea, brackish water, and rivers) with land areas. Indonesia, especially the Banten and West Java Regions, have vast mangrove areas and are currently under threat of land conversion. Moreover, mapping the distribution of mangrove forests using the Google Earth Engine platform based on Cloud Computing is less published. Therefore, this research was conducted by introducing the distribution of mangrove forests which involved the Random Forest (RF) classification algorithm method and looking for the best modification of the index.