Roman numerals, Roman numerals conversion, Romana numeral Online Practice for preschool, Kindergarden, 1st grade, 2nd grade, 3rd grade, 4th grade and. This translation tool allows you to convert to and from roman numerals. Simply enter into the box either a whole numeric value between 1 and or a set of. converts between Arabic numbers (like ) and Roman numerals (like MCMXCVI). New Online Book! Convert between Arabic and Roman Numbers.