The Application allows the handling of Arabic and Roman numbers and the conversions between them. It is useful for students of all levels and users who like to improve and increase their knowledge. The Roman numeral system (Roman numerals or Roman numerals) was developed in the Roman Empire. It is composed of seven capital letters of the Latin alphabet: I, V, X, L, C, D and M. Currently they are used to identify centuries (XXI), names of monarchs (Elizabeth II), popes (Benedict XVI), movie sequences (Rocky II), publication chapters and classic watches.