Roman Numeral ConverterX
Enter a Roman numeral or a decimal value. It will be converted to the other as it is entered.
Roman Numeral:
Roman numeral digits are I, V, X, L, C, D and M. 
Decimal Value:
Decimal digits are 1,2,3,4,5,6,7,8,9 and 0. 
See Wikipedia's Roman numerals article to learn more.