Type a number (like 14) or a Roman number (like XIV), and click 'Convert':
Roman numerals are based on the following equivalents:
Roman Arabic M 1000 D 500 C 100 L 50 X 10 V 5 I 1
The Roman numerals are arranged from left to right in order of decreasing value and added. For example, MMII = 2*1000 + 2*1 = 2002. If a lower numeral appears before a higher one, it is subtracted from the higher value, not added to the total. For example, IX = -1 + 10 = 9. Similarly, XC = -10 + 100 = 90, and XL = -10 + 50 = 40. This avoids writting Roman numerals with more than three consecutive occurrences of the same letter; for example, IV <-- IIII, XL <-- XXXX.