Roman numeral MMMMXX

This calculator will help you to convert roman numerals to decimal numbers. For example, it can help you find out what number is Roman MMMMXX? (The answer is: 4020). Enter roman numeral (e.g. 'MMMMXX') and hit the 'Convert' button.

Roman numerals list: I=1 V=5 X=10 L=50 C=100 D=500 M=1000