Two-way conversion between Roman numerals and Arabic (decimal) numbers Converts Roman numerals from 1 - 3,999,999 Supports 5 operations (^ * / + -), parenthesis, and decimal points Follows the correct order of operations Interprets expressions consisting of Roman numerals, Arabic (decimal) numbers, and a combination of the two Able to reformat improper Roman numerals and simplify expressions Displays output as you type Copy/paste functionality Custom keyboard English, Spanish, and Russian 0.15 MB download No permissions No ads