Loading calculator...
Loading calculator...
Convert between Arabic numbers and Roman numerals. Supports numbers from 1 to 3999.
Roman Numeral Values:
Subtractive notation: IV = 4, IX = 9, XL = 40, XC = 90, CD = 400, CM = 900
Roman numerals are a numeral system originating in ancient Rome. They use combinations of letters I, V, X, L, C, D, and M to represent values. They are still used today for clock faces, outlines, and monarchs.
When a smaller value appears before a larger value, it is subtracted. For example: IV = 5 - 1 = 4, IX = 10 - 1 = 9, XL = 50 - 10 = 40, XC = 100 - 10 = 90, CD = 500 - 100 = 400, CM = 1000 - 100 = 900.
The standard system goes up to 3999 (MMMCMXCIX) because there is no standard symbol for 5000. Ancient Romans used an overline (vinculum) to multiply by 1000, but this is not commonly used today.
2024 = MMXXIV: MM (2000) + XX (20) + IV (4).
MCMXCIX = M (1000) + CM (900) + XC (90) + IX (9) = 1999. This is one of the more complex Roman numeral representations.
Yes. Roman numerals are used for clock faces, chapter and section numbering, movie sequels and Super Bowl numbers, monarchs and popes (e.g., King Charles III), and copyright years on TV programs.