Convert between numbers and Roman numerals
Type a number (1-3999) to see its Roman numeral equivalent, or type a Roman numeral to see its decimal value. Roman numerals use seven symbols: I (1), V (5), X (10), L (50), C (100), D (500), and M (1000). When a smaller symbol appears before a larger one, it's subtracted (IV = 4, IX = 9).