Convert between numbers and Roman numerals in real time.
| Number | Roman | Number | Roman |
|---|---|---|---|
| 1 | I | 10 | X |
| 2 | II | 50 | L |
| 3 | III | 100 | C |
| 4 | IV | 500 | D |
| 5 | V | 1000 | M |
| 6 | VI | 1999 | MCMXCIX |
| 7 | VII | 2024 | MMXXIV |
| 8 | VIII | 2026 | MMXXVI |
| 9 | IX | 3999 | MMMCMXCIX |
Roman numerals use seven symbols: I (1), V (5), X (10), L (50), C (100), D (500), and M (1000). When a smaller value appears before a larger value, it is subtracted (e.g., IV = 4, IX = 9). When it appears after, it is added (e.g., VI = 6, XI = 11). This converter handles all values from 1 to 3999, the standard range for Roman numerals.
Subtractive notation keeps Roman numerals concise. Instead of writing IIII for 4, we write IV. The six subtractive combinations are: IV (4), IX (9), XL (40), XC (90), CD (400), and CM (900). All other values are formed by adding symbols left to right, from largest to smallest.
Roman numerals appear in clock faces, book chapters, movie sequel titles, Super Bowl numbering, outline formatting, and copyright year displays. Architects and designers use them for elegance, and they remain standard in academic outlines. Understanding Roman numerals helps with reading dates on buildings, monuments, and historical documents.
Standard Roman numeral notation does not have a symbol for 5000 or above. While extended systems exist using vinculum (overlines) to represent larger numbers, the classical system covers 1 through 3999. This converter uses the classical system, which is the most widely recognized and used format worldwide. Enter any number or Roman numeral above to convert instantly.